Personally I would do a 17x8 w/ 5" b.s. or a 17x8.5 w/ 5.25" b.s
BTW I'm selling my wheels/tires check out
this thread for pics and info. If you need tires too this maybe a good way to go, you could just dismount the 315 tire and run a 275-285 tire. You would have to slightly narrow the rear end though....just thought I would mention it.
What wheels were you going to order??