man it is fine!!!
I have 19's (8.5 @ back, 9.5 @ back) looks SOOO hot, (but im bias..its mine)
U need some really stiff sus, (which i presume ur coilovers are) I have D2 drift spec, adjusted to the stiffest degree. This ensures you can drop it as low as you can!!!
I think my offsets are the as urs too.
my fronts needed 225s as the tyres were scrubing against teh strut (i was originally trying 245s with no luck). At the rear i am running 275s look hot as when viewing hte car from the back, and likewise my guards are rolled too.
Good Luck,
Peter