But what camber
I guess different wheel/tyre combos will allow you slight room for manouver, but I certainly wouldnt be comfortable to run anything more aggressive than Adrians, as I have seen them on the ramp and on the road and they are spot on IMO (of course its all a matter of opinion)
I dont know
The rotas are 18s not 19s so that should give him a bit more room to play with
IMO its a good choice of offset & its to see somebody go for an agressive offset for once rather than a boring, conservitive +30