Anyone fit staggered 19 inch rims on an E9x?

Was in touch with a wheel manufacturer up north and 18's won't be out until April, but they can do a deal on 19's, they are 8.5 fronts and 9.5 rears. Should I be looking into rubbing issues, arch rolling all that jazz? My E92 is an SE Sport, haven't done anything with suspension yet, might be looking into a Prokit though! It also has 18's fitted with square set up, and I was hoping to stay with 18's but staggered, now I can hold off until April anyway no problem, and had staggered 19's on my old E46 with no issues, these had 255 wide tyres on the rear, but heard 265's would fit with no arch modding too, and there seems to be more tyre variety in 265 width?!

Would that sort of set up be right for the E9x's also? I say E9x as I presume all et's/offsets etc are the same in range bar the M3?