55.2-59 15x7 smoothie wheels ?

[70ssclone]

I'm changing up the looks of my 55 and I'm selling the factory cucv gm 15x8 5in backspace wheels. I'm looking at some smoothie wheels that will accept the smaller style caps and I'm going to go with gloss black but not sure of white walls or not. The 15x7 wheels i find have 4in backspacing which I suppose is good for these trucks? Also will a 235/70/15 tire look ok ? I'd like to keep the 28in tall tires because of the factory gearing . Also any pics of your trucks with specs would be helpful as well !