Sounds like mine - the rear springs are so beat that 'lowering springs' will likely raise my car. Sounds like the Hotchkiss setup is right up your alley, including the bilstiens valved just for them. Good sway bars out of the kit too. I'd like to get them, but they are out of my current budget and I have half decent sway bars.
Poly control arm bushings FTL. They bind and thus squeek. Poly has its use, but not on parts that pivot like that. Get the GW del-a-lums. Tubular LCAs are bling only - no gain, not even weight, in 2nd gens. I'd only consider them for coil-overs - claimed added strength at the mount. GW or Speedtech UCA are better upper arms- offer improved geometry. Many UCA do not. That is why I got the taller lower ball joint - it raises roll center, thus improving camber movement and less body roll.
GW's solid body bushings (no delrin there) are nice, a lot of guys get the ones that drop the body 1/2". I got the regular height ones.
Nice to know Mike - you mean rears? I doubt they would come close to fitting in my 5-spoke - they have deep drop centers. I know of other brakes that fit 15s that won't fit mine. I might have to bring a wheel to your house for a test fit.