Rim width and backspace

Same width on all four?

Well with those rims you're stuck with 17x7's on the front, so if you want to run the same width all the way around it'll be 17x7's. Same for the tires. The widest I'd recommend going is a 215/50/17 in the front, so if you want to run the same size all the way around that's what it has to be. You'd be much better off picking a different rim no matter what you want to do, unless you really want to run 215's in the front.

What rear axle do you have?