1st Gen Mustang suspension options?

[skooli]

This summer I plan on starting to go the pro touring route with my 68 Fastback, but I'm not sure what I want to do about the suspension. I think, for my driving skill level, stiffening up the current suspension and dropping the upper control arm would be sufficient. I have 620 coil springs with factory style Moog control arms, a big front sway bar, 5 leaf mid-eye leaf springs, Shelby style under-ride traction bars, and welded in subframe connectors. It still feels a bit soft for high performance driving. Should I just improve my current set up or go for something like a ridetech or TCP? The new DSE systems look amazing, but they are a bit out of my budget. Also the plan is to possibly do some road course events. Bear in mind I am a novice driver.