BigGreenZ_71

I'm looking at getting a set of 15x8" Ion Style 174's. They have a 3.5" backspacing and a 4.25" hub size. I shouldn't have any problems running them with a 3" body liftshould I? The tires are 33x12.50x15. Here's the link to the rims: http://www.jcwhitney.com/style-174-b.../p2024164.jcwx

Also I'm trying to get my tires tucked back in my fenders a little better than what they are now, you'll see what i mean from the picture. Currently the truck has 15x10's with spacers and they stick way out. These new rims should help out for at least an inch or so right?