Summarized:
Progress CSII for track (not for going low or you'll blow them)
Koni/GC (can go low, is dependable, lifetime warranty)
AMR step up from Koni/GC.
everything else: ehhhhhhh maybe, maybe not.
EK Forever Guy (Libertariat) the writer of that thread, did mentioned he wished he started off with Koni/GC instead of progress, or AMR's.
other then the springs. your car loks like its off to a decent start. at some point get some good coilovers but for now just try to keep your shocks from blowing( avoid potholes)