Living area — the party wall

The 85″ fits — here is what it costs

An 85″ panel is 188 × 106. In a 192 bay it fits, and the dashed outline shows it against the 75″ you have now.
It eats the display bay. At 75″ that bay is 84 wide; at 85″ it drops to 62. That is the whole trade, and it is worth settling before anything is cut.

It has moved as far as it can. To its right the bar, wine and tech need 109 cm plus dividers, and that fixes where the TV bay ends.
With an 85″ the TV centre lands 22 cm left of the wall centre; with a 75″ it is 11 cm left. Centring it means losing one of the three bays on the right — and the tech cupboard cannot move, because that is where the network cable arrives.
The narrow wine bay reads as a divider rather than a mass, so it should look more balanced than the numbers suggest.

The pier you are building around, the original rear wall and the bulkhead all sit at the same point, 367 from the garden end. The break between the two runs is where the building already changes.
The top band of cabinets runs at 191 across both halves, so the whole 7.1 m reads as one line even though the two ends do different jobs.

Entertainment	cm	Laundry	cm
Display	62	Cleaning	55
TV	192	Stick vac	30
Bar	42	Coffee corner	78
Wine	19	Pantry	55
Tech + robot vac	41	Washer	66

Kickboard 10, drawers 38, TV bottom at 68. The drawer height is what sets the TV height — a second row would push the TV up about 25 cm and leave nowhere for the soundbar.
Sonos Arc below the TV, in the 53–62 band. It is 114 wide, comfortable in a 192 bay. Below is right: the up-firing drivers want the ceiling, and above the TV inverts the height channels.
TV centre at 112 for the 75″, 121 for an 85″. Seated eye height is around 105–110, so both read comfortable rather than craned.
Cabinets and drawers align. Four doored cabinets on top and four drawers below, both 73 wide, both stopping at the wine. The verticals line up all the way from floor to ceiling.
An 85″ leaves 17 cm between the top of the screen and the underside of the cabinets. Enough, but it is the tightest gap on the wall.

Wine floor to ceiling, two bottles across in a 19 cm bay — roughly 44 bottles cork-out. It needs about 35 cm of depth, the deepest single requirement on this run.
Tech cupboard 41 wide, full height, network cable dropping in from the ceiling where it already runs. Switches get hot in a closed ply box — plan a vent or a slatted door now.
Robot vac dock below it, with the kickboard cut away so it can drive in. That is the only break in the kickboard along the whole 7.1 m.
Bar bay: kegs at the bottom with 53 cm clear, which takes the 20 L; drop leaf hinged at 105 for a serving surface; whisky on open shelves above.

Four columns into 295: pantry 84, appliance 88, cleaning 48, washer 66. Reading left to right that is food → cleaning, exactly the split you asked for — and it puts the pantry at the end nearest the kitchen.
The top cabinets very nearly match. Four across each end: 73.1 on the entertainment side, 71.5 here. A 1.6 cm difference across 7.1 m that nobody will ever see, so the top band reads as eight identical doors.
Washer on the floor with a false kickboard across its front and a door in front of the machine, then a double-door cabinet from 95 up to the top band — 96 cm of it.

Your brief filled the space above the washer, which is where I had put the drying rail — so drying was homeless again. Except the cabinet you have specified is exactly the right box for it: doors that close, directly over the machine, 66 wide and 75 deep.
It solves the airer in the middle of the lounge without costing a single centimetre of wall. It wants a rail, slatted shelves, and either an extract or a small dehumidifier — otherwise you are venting damp into the living room.
Honest limit: at 96 cm high it takes shirts on hangers and flat drying. Trousers and dresses at full length will not clear.

Machine	W	D	H
Profitec Go, with portafilter	21.0	41.0	38.1
Niche Zero	12.2	21.1	31.1
Kenwood Chef XL, turned sideways	39.5	29.5	38.5
All three	72.7	—	—

Turning the Kenwood costs 10 cm. Facing forward it is 29.5 wide; sideways it is 39.5. The three machines go from 62.7 to 72.7, and in an 88 bay that drops the gaps from 6.3 to 3.8 each.
3.8 is enough between machines but tight at the ends — awkward to clean behind, and not much room for the Profitec’s portafilter handle to swing.
It also kills the 78 option. That would leave 1.3 cm of gaps, so the pantry can no longer be widened to 94 by shrinking this bay.
The fix, if you want it: take 6 cm off the pantry. An appliance bay at 94 with a 78 pantry restores 5.3 cm gaps — comfortable again, and the pantry is still wider than the cleaning column.

Depth actually improves. Sideways the Kenwood is only 29.5 deep instead of 39.5, so the Profitec at 41 is now clearly the deepest thing on the worktop.
Height still a non-issue — 38.5 tallest against 101 clear, with room to raise the Kenwood’s head and lift the Profitec’s tank out.
Power. The Profitec draws around 1400 W and the Kenwood is similar. That bay wants a properly rated spur, not a shared socket.

It had its own bay in your sketch and this brief does not mention it. The cleaning column at 48 wide can take a wall dock in a full-height slot, but not if it is all fixed shelves — worth deciding now, because it needs a socket.

It stays where it is and rotates 90° — facing into the room, loadable from the kitchen side. The supply and waste do not move, which takes the most expensive unknown off this wall.

The washer fixes the laundry end at about 75 deep. The pier projects 51. Wine needs 35. So the entertainment run can sit flush with the pier at 51, or carry through at 75 for one unbroken plane.
The difference is 0.9 m² of floor — 1.87 m² at 51 against 2.75 m² at 75.

Sized for an 85″. The TV bay stays at 192 and the display bay at 62. The 75″ you have now sits in it with the 85″ outline shown around it, so the carcass never needs touching again.
One coffee setup, and it lives here. Machine, grinder and Kenwood all move to this nook — which hands the kitchen prep run back around half a metre of worktop, useful given the kitchen layout is the next thing to draw.
The false wall goes. Only the 51-deep pier is permanent now, so nothing forces the run deeper than you want it. That leaves depth as a free choice between 51 and 75 rather than something the building dictates.

Depth: 51 or 75. The washer fixes the laundry end at 75. The entertainment end can sit flush with the pier at 51 and give back 0.9 m² of floor, or carry through at 75 for one plane.
Kenwood model — Chef XL at 29.5 or standard Chef at 24.
Stick vac — a full-height slot in the cleaning column, and it needs a socket.
Appliance bay at 88 or 94 — 88 as drawn is snug with the Kenwood turned; 94 is comfortable but takes the pantry to 78.

Your sketches

Entertainment end.

Laundry and pantry end.