Tera vs RE
Depends on the ride quality you're looking for.
Tera coils are softer, more supple, and in my opinion more suited to onroad driven Jeeps. I run a Tera 3T (with all RE control arms) and OME shocks and I like the ride onroad. Offroad it's a bit too soft for my taste. Tera coils have a reputation for settling and then sagging sooner than will RE coils.
RE coils are more firm and deliver a comparatively harsher - but still very acceptable - ride onroad (at least when mated to DT3000 shocks). Offroad they outperform Tera coils by providing a more stable stance.
You'll be able to run 33x12.5R15s with either lift, but will probably rub under articulation with both. Especially after 2-3 months when the coils settle.
Incidentally, I'm probably going with RE (or perhaps OME) 4.5" coils when I lift again this spring to accomodate 35s. But then I perfer a firmer ride both on and off road. The choice is yours.
[URL=http://www.cardomain.com/memberpage/370762]HEAVILY ARMOURED 2002 SAHARA[/URL]