Ive heard nothing but great things about JD fab, I dont think youd be disappointed with their stuff. That said, If I were in your shoes Id happily pick up the TC kit linked above (if you have the funds for it - no shame in having to save money to afford to build these dumbass trucks in "stages"). A few hundred bucks in small parts and a few cans of spray paint and youll be in business. Not sure if TC would give it the "blessing", but Ive seen a few people running coilovers on those old torsion bar kits without any issues - they end up moving the lower shock mount forward on the arm to clear the axle.
As for the rear of the truck... Im going to go against the grain here and say "link it". By the time you find a pair of used deavers, buy the TC or ruffstuff mounts, shackles, used shocks, etc etc, for not that much more money, you could link it. AND, you could still keep the majority of your bed space too.
The blue p/u that was posted above had deavers and dual 2.0 (IIRC) shocks under the bed and that thing kicked ass.
Just my $.02
[PS - if youre looking for a front bumper for your truck, it have THE bumper off of that blue truck sitting here at my house, Ill let it go cheaper than you might think]