Just a small update, my E-Baja is built and I test drove it tonight, and all I can say is WOW, great job Castle on this insane combo. My two 4s batteries haven't arrived yet due to USPS issues (I'm cursed) but I ran it in front of my apartment on 6s and I didn't even have enough room to get to full speed! I have the brake set to 25% and its just about right for me, the brakes on this thing are crazy good.