New to Slamming cars, need help (RSX)

[GarrettW]

Hi as ive only been in the car scene for about a year now, im still learning, and im brand new to slamming cars, so What im asking is whats a perfect wheel size to get my rsx perfectly slammed and fitted? not too slammed though, mainly because im on Megan racing coils and Ingalls camber kit. Im interested in getting 18x9.5 +15 would I need some spacers or anything like that to get a good look? or is the wheel too wide and such. sorry I seem so stupid, just trying to learn. I would like to have my rear at -5 camber is this possible with the wheel setup I have? Oh and another thing, im boosted as well and running a 3 inch turbo back exhaust, its not the most low friendly exhaust out there. so if you were me what would you guys do?

Thanks in advance!