I'd suggest taking a look at our handy search function, unfortunately our wheel/tire issue has been done to death.
Now, you're getting 33/12.5? then the only issue really running a 15x10 is some strength issues with IFS, if you don't wheel it too hard it should hold up. Just pick something close to stock backspacing or a bit more, not much unless you like the tire sticky out of fender look.