1. For the winch, get one of these batteries;
http://www.atomikrc.com/collections/...r-nimh-battery
2. Tekin aren't great. I've seen and heard horror stories of them blowing up while running in a fire. At our track, they one time had blown up 3 of them in 1 day!
Motor;
http://www.ebay.com/itm/Novak-Ballis...-/330991597818
ESC;
http://www.dollarhobbyz.com/traxxas-...xl-3s-esc.html