[M340i Touring Xdrive]

Looking for help with the right tires for supra rims for my G21 M340i xdrive touring. I searched for a lot of information and found it for the G20, but not for the G21. I can't find out if there are any differences.

My car:
M340i Xdrive Touring with adaptive suspension

Current rims/tyres:
M performance 792M
Front: 8J x 19 x 27ET with 225/40 tires (P-zero RF)
Rear: 8,5J x 19 x 40 ET with 255/35 (P-zero RF)

New rims:
Supra A90
Front: 9J x 19 x 32 ET
Rear: 10J x 19 x 40 ET

My goal in order of importance:
1: As much grip as possible (due to Stage 3)
2: As much comfort as possible
3: Preferably as much of a flush look as possible, without the use of spacers/springs, unless someone can clearly explain that it is advisable to use spacers/springs.

Possible tire options:
1: Front: 235/40, Rear: 275/35
2: Front: 245/40, Rear 285/35
3: Front: 245/35, Rear: 285/30
4: Front: 255/35, Rear: 295/30 (as far as I know, the front 255 is only possible with spacers)
5: Front 255/40, Rear: 295/35 (don't think this will fit, just asking to be sure)

Presumably option 2 will accomplish my goal the most, but I can't figure out if this size will fit.

In concrete terms: Which tire size do you recommend for my G21 in combination with the supra rims?

Thanks in advance!