I guess with the bump of this thread I'll also add in what I've been up to with the kit. Its still out of the car and I'm waiting to get the batteries back.
I have been using my own BMS for a while now, it only worked for protection while charging the batteries. I have since added functionality for protection from over discharge. You can read more about the system here:
http://ecomodder.com/forum/showthrea...bms-20445.html