Jacob-R33

Hey guys, Looking at a set of Rota Grids for my R33 GTS-T series 2 which is marginally lower than stock on coilovers (due to where I live/work I have to go up the occasional kerb and don't want to leave my exhaust behind so not going lower yet) There is two sizes I'm considering and was wondering which would look/fit better without camber adjustment or guard modification. Front 18x8.5 +25 Rear 18x9.5 +20 Or Front 17x9 +12 Rear 17x9.5 +12 Won't go bigger than 18s as I already have back breaking, rock hard suspension on the stock 16s and roads here are somewhat crap. Also, tyre wise, I want to keep standard rolling diameter and don't want to stretch tyre, any suggestions? If anyone has fit these sizes before, some pictures would be awesome. Thanks