904 clutch clearance issue

I left the CRT multi spring as delivered (all springs installed) ...and fitting 5 thins into the 4 drum...will require machining about .070 off the flywheel....which is one third of the total thickness...I am not a fan of that...and 4 thins with an extra steel to take up space...in my mind (correct me if I am wrong) will run hotter than the 4 thick plates.
This car is going to be 60% street 40% track.And it is a B body.