No ACL and less than 400 hp, sell me on a clutch

With the amount of Mountain Biking I'm able to do, I'm confident in keeping the 4 spd. Not having an ACL is really no big deal,(gotta be careful on stairs though) when I severed it back in 1990 I waited 5 years for the repair, just kept putting it off. The Cuda has more leg room than the Land Cruiser. In the LandCrusier, my knee joint is bent pretty good with pedal up and it's that force on the joint when bent that is uncomfortable. Driving the stock tired Cuda years ago I don't remember having any issues thanks to more leg room and a tired old clutch, my thinking is with a hotter motor I would need more of a performance clutch? So hypothetically lets say I begin a try it and see approach. I start with the least expensive semi performance clutch, what would that be? I don't know much about 3 finger clutches, I have seen some pretty messed up fingers in the past, is this because there are only 3 fingers/3 wear surfaces?