I wouldn't change any bearings until they're bad. Wheel bearing howl for a LONG time before they let go completely, so if they're not howling, they're not bad.
But changing the fluids in axles, trans, and t-case should be done if you haven't already. (And you are really supposed to do all four more often than 100k I bet...)
Same with spark plugs.
Shocks should be replaced when they're worn out, which is to say when they start leaking. Your OEM shocks are pretty soft, so an upgrade might be in order anyway.
Coolant could probably use a flush too. I tend to blow out the pink stuff and put in Prestone's "Compatible with all coolants" stuff, which is yellow/green. That way I can add anything in a pinch, and all my vehicles can use the same stuff.
Keep going!!
C