I don't think the stock ESC would work with the Scorpion motor. It requires a 45A ESC and the stock is a 35A I think.

I would be leery of that battery. Many no-name batteries are lower quality, but who knows, it may work fine. But I did notice the max burst discharge is only 30C. Not enough IMO.

I would go with something like this:

http://www.rcheliworkz.com/product.asp?specific=113214

Or this:

http://www.thunderpowerrc.com/html/extreme-V2.html