Rausch Creek provides more than ample opportunities to grenade any axle you can affix to a TJ so I wouldn't use its topography & features as a factor in limiting a build.
That said, it also provides more than enough trails for the stock Dana 35 to enjoy without much threat of breakage, driver dependent of course.
I floated somewhere in the middle of all of it on essentially the exact build you're seeking, without issue.
If it's not just a weekend ride & you're actually driving it in the snow/ice then avoid the auto locker in the 35. As far as the front, for 33s most will say no need to upgrade the axles, same advice on avoiding the auto locker.
