I just so happen to run 17x7's on the front. All four corners actually.
17x7 with a 4.5 backspacing with coilovers.
FWIW the car is 1 inch lower than stock. The strut housings are not sectioned yet. Stock fenders no rolling or trimming or tire rubbing. They fit fine even before making the front end adjustable. The rear is stock geometry with coilovers and camber plates only. All stock hubs and brakes typical. 17x9's the rear? 17x8 more like it. Did you make a flat board offset tire/wheel templete to check the full rotation at your given ride height? It's easy to make and the only way to really know what you are getting into with, your particular car, rather taking my advise or anyone elses. My general thoughts on wheels is if you fit them close you may run out of room for chassis adjustments down the road. Hope this helps and good luck!
Brian