Graves, what would you do up front with the links? Coils. coilovers, air shocks? I've also had the hardest time finding stock xj leafs. How much lift will they give me as opposed to my stock yj leafs? I know they give stretch but what about the lift? And would you just stick with the 2.5 to keep it cheap?
I personally think link geometry is more important than Coils. coilovers, air shocks.
but
Coils are cheap, and predictable.
Airshocks are small and require less planning to fit them, but you'd need to tweak them and run a swaybar.
Coilovers if I could afford them.
I'd find used lift xj leaves and use them spring under. or spring over with stock xj leaves from the junkyard. They are pretty flat so it all depends how you mount them but a spring over with xj leaves in the stock hangers should give you 5" maybe.
if you are used to 22re's the 2.5 has gobs more torque. Offroad: it'd be fine unless you're planning on racing in delta
I personally couldn't handle it on road.