To Pre-order, or not to Pre-order?

I am going to stick my head into the brushless world and I have been doing some research. I will be getting the MMM esc. I was thinking about the combo, but I am not so sure now after hearing about the new 70 & 80mm Medusa motors. I know that they have a good reputation and everything. Should I pre-order a 70mm 2000kv Medusa motor? Do you guys think that would be a good option compared to the Neu-Castle motor?

I am wanting a reliable not to hot (temperature wise) set-up. I plan on running 4s li-po batteries in my E-Revo. Would the 2000kv motor be the right one for a 4s and possibly 6s in the future?

P.S. Does Medusa have good customer support?

Sorry for all the questions, I don't want to mess up and waste a lot of money. (College Student here)

Thanks!
-Brett