I've just installed a Sachs racing clutch (4 puck un-sprung) recently and have to say it's holding up very well with 6000rpm launch (500bhp+ and 420ft-lb), the bite is appreciably more aggressive than standard or sport clutch, but it's very useable and I've been using it as my daily so far with no trouble at all. The biting point is more or less where you expect it to be, which for me is about half way.
As for bedding in procedure, I've always tried to keep to 100mile run in, with the majority of it being stop and start traffic ideally, engaging and disengaging the clutch.