Well 10" wide wheel calls for at least a 12.5" wide tire (IMO). And anything less than 33s is going to be awkward looking (again, IMO).
So, assuming you're running 33x12.5s, with that kind of backspacing and offset, your going to need a LOT of lift, or a LOT of trimming, otherwise your going to rub like crazy. I think 15" wheels will fit around our disks/drums, but you may want to look at RCX lift reqs.. I feel like it calls for at least 16" wheels.