Before I get flamed and upset guys I provide parts to (sorry Blake), I have to say I'm writing this from 80% personal, 20% professional.
Chevmech, you stated you had 3 main criteria for choosing these parts, but that you were also on a budget (I'm in the same boat. . .though I build these parts for a living I do have a wife, a kid, and a bad car habit, so "bang for the buck" is always on the top of my list.)
1-vette bearing packs
-$175-350 for Corvette bearing packs (EACH)
-$60 for stock Camaro bearing kit
2-improved geometry
-$1200 for AFX spindles
-$350 for Ridetech spindles (or $1000 for TruTurn with spindles, you can see a direct comparison here:
http://www.ridetech.com/store/tru-turn/)
3-longer shocks
-Chicane kit with Ridetech single adjustables is $945
-Ridetech single adjustables to fit a stock subrfame are $700
(since you would be using the same lower control arms the only thing the Chicane kit gets you is a double sheer upper mount. the suspension can only move between the bumpstops, so it doesn't care if you have long stroke shocks. If you were using a different lower control arm the Chicane kit would then provide the correct stroke.)
So lets say you buy these parts, and in a couple of years have to replace the hub bearings (so we can factor that into the price just for S&G's).
You'd spend $2495 on the parts you want now.
You'd spend $1760 on an equal performance option (this includes the TruTurn, so I'd say it's even better performance wise).
If price and performance are equal factors you could easily have an extra $735 to throw at the rear.