I too swear by Spec Clutches. I am running a Stage 1 in my daily driver and put about 85 miles on it every day. Some stop and go, but quite a bit of interstate driving. The pedal effort is as easy as the stock clutch I pulled out of it.
The Stage 1 is rated at 480ft/lbs and given the mods you listed, I would suggest this one.
If interested, shoot me a PM.
Richard
Tech Support
Tremec TKO, T45 & T56 Transmission Systems
__________________
Self Proclaimed "Resident Manual
Tranny/Driveline Guru"
Obamacare my a$$ We are all going to pay for electing this tool.
Remember, it is almost impossible for anyone, myself included, to diagnose a problem over the internet without seeing the car. My advice is simply that, advice based on years of experience. I don't want you or anyone taking my word as gospel. I am trying to give some direction as to what I think may be happening.
What is better centforce or spec clutch 
