Which Alu Rims in a CB750 ?

[Tetter]

Hi Guys,

I'm working on a CB750, I want to turn into a "classic" Café
Thinking of Standard Tank, sidecovers, Clubmans, Guiliari race seat, Alu fenders, alu rims.

Searching for the rims I found these on E-bay ( italy )
http://www.ebay.nl/itm/COPPIA-CERCHI-ALLUMINIO-ALUMINUM-RIM-Honda-CB750-PROFILO-TIPO-BORRANI-RECORD-/221145236037?pt=Ricambi_e_Accessori_Moto&hash=item337d488245

They recommend 18"x 2,50 rear, and 19"x 2,50 front.
Original is mounted 18"x 2,15 and 19"x 1,85 if i'm correct.

For the rear i would think 2,5 could be ok, but for the front ? isn't that too wide ?

I do think it would look very cool though..... so which tyres should then be used ?
Not the "standard" 4R18 and 3,25R19 I would guess ?

Or should I go for 2x 18"x2,50 ? and are there spokes for that ?

this is the idea:

But with these short fenders and rims like these:

 

[crazypj]

I would probably use WM3 (2.15") front and WM4 (2.50") rear
If you stick with 19" and 18" you use stock spokes
Use a 4.10" or 100~110/90 front and a 4.25 or 120~130 rear tyre