I would do your lift in a few stages, to make sure each change does what you want it to do.
I would do your rear AAL first, then your front (since your front will have a little adjustability, which you can do to attempt to match whatever your rear did), then get an alignment, then UCAs if your alignment couldn't get close enough to spec.
5100s up front with a lighter OME coil or eibach coil will get you some lift - but if you stay under 2.5", you may not need UCAs. My recommendation would be to get the front setup on the way you want it, get an alignment, and see if they can get it into spec - if they can't, then you may need UCAs. They offer no other benefit in this application besides allowing proper alignment. It is a vehicle specific thing, so get yours aligned before you drop that $500 additional, to see if you need it. May people with 2-2.5" lifts do not end up needing them.
For rear AALs, you can't go wrong with most major brands - they aren't really rocket science. Wheelers and Toytec both offer reasonably priced AALs for your truck. I'd recommend getting new U-bolts at the same time, most are so rusty that they would be frustrating to reuse. I have Wheeler's 3 leaf progressive AAL, which comes with Ubolts already, and was pleasantly surprised by the ride - and it added about 2.5" to the rear.
If you want to do Coilovers, but are on a regular human being's budget, I'd look into the SAW 2.0s (Sway away), Wheeler's offroad has good prices. It is a popular cheaper coilover - nothing super fancy, but good quality. You can also shop used - I got a very good deal on extremely lightly used Icon Coilovers for my '96 by shopping Craigslist, Buy and Sell forum here, and the classifieds at Race-dezert.com for a few weeks.
'96 Tacoma, Ext. Cab, V6, 4x4 - Icon COs, Wheeler AAL, rear 5100s, Relentless Fab bumper, Warn winch w/ Amsteel line, 31" Bridgestone Dueler Revos, and a bunch of dents. 202k miles.