18" Wheel help

Post your wheel and tire combos.

So i found this Demon and really like how it looks. It says it has disc fronts and a stock 8.75 with drums, same as mine.
Is 4.5 enough backspacing for the fronts? I would rather use an 8" front wheel,not a 7". The Rear shows 9.5 with 5.25 back space.
Looks like everything clears fine from the pics.
Thoughts? I thought i needed more backspacing in the front and or rear too.