Question about Setup

I was wondering if I were able to get 31x11.50 r 15 on a rusty's 3 " lift AAL with 3/4" shackle lift, getting the kit on thursday... can't wait but I was looking at a wheel/tire combo for swampers w/ rock crawlers for around 650 another question I had is about the wheel lug nut spacing, what is the correct spacing for 92 stock xj 5x whatever... and do I need anything to add on these wheels?

Thanks
-Jon