Just rebuild the engine. The 4.0 engine is pretty bulletproof and give decent power. As long as you don't go crazy with lifts and tire she'll be fine. As an older and shorter man, I wish I stuck with a two inch lift and 31 inch tires to make it easier to get into.
If you buy new, an LS swap would be pretty cool. And not to much difference in money. But this would lead you down the rabbit hole of better transmission (AX15 would work with V8 but better choices out there), lift, tires, ect.
