How much tire can I fit?

Okay, so I figured out my backspacing and ordered wheels and tires. Fingers crossed I might actually know what I am doing! 17x7 (would like narrower but all they had) in front, 17x9.5 (wanted a 10 but close enough!) in the rear. 225/50/17 front Nitto Extreme 555, 275/50/17 rear Nitto Extreme 555. Rears are just a tick under 28 inches tall which is exactly what I wanted. Discount Tire has the screaming deal on Ebay right now and I saved $100 on the wheels and $100 on the tires (2 separate orders to do this). $840 for everything shipped.