Keep the traction control on and you'll be fine.
Nope. He'll still have traction issues. My MPT tune shows me that every single day. It will help, but not enough. Definitely use it though. He will either have to let go of some more rear tire pressure on the track or get some better rubber under there, unless he goes with other suspension components.
I reckon now, OP, you kind of get the idea of what I was talking about in my thread. Trust me, it's no more easier to control in the M6. Too much fun to walk away from though.