Maddog STS has the ability to help, but if you're going to abuse your transmission, nothing will save you. For some reason, Short Throw Shifter seems to translate to Johnny QuickShift. If you want your car to sound cool, install metallic bushings or something so it clicks when you shift, but slamming the shifter isn't a nice practice.
I can explain the rest to you, but PM Maddog. It's his product and he can explain it in much more detail than I can.
And as for the transmission, you seem to be on the right path. However, make sure you check other areas of your transmission before the clutch is condemned. You have a hydraulic clutch. You may be low on fluid. You'll never know until you visually inspect everything and find out the solution. Good Luck.