[KiDTr0LL]

I have a question about air suspension. From the search, I know some members have it, but not much details. I'm planning on doing Airlift 3P management with BC Racing coilovers with universal bag to strut (VERA from bagriders). To be specific, VERA Double Bellow Bag for BC Racing Coilovers for the front and VERA Sleeve Bag for BC Racing Coilovers for the rears. My main question is for those that have it, how big are the diameters on your bags? I'm trying to see if these universal ones will fit.
Front:
Extended Height 7.50"
Compressed Height 3.50"
Diameter 5.50"
Rear:
Extended Height 10.00"
Compressed Height 5.00"
Diameter 3.75"
Also, what size rims/offsets are you guys using?
My rims are 21x8.5 ET 36, 245/35/21 tires in the front and 21x10.5 ET 52 285/30/21 in the rears. I heard sometimes some cars will need spacers/extended lugs if the rims aren't aggressive enough.