brushless conversion questions

fiegos are cheap but they run hot (very hot I guess)
-Go with the MMM controller (castle has taken preorderes so I have to assume they will really release it when they say they will (end of may?) But I think the MMM motor is still in waiting. I don't follow castle, so I could be wrong.
-For racing 4s is sufficient, you could run 5s, but it would only be giving you more top end speed (which isn't what you really need on a track in my opinion).
-Most people go 5000mah to 6000mah, some go high (8000mah or more) to make absolutely sure they will have enough juice for anything. But a larger pack will add weight and slow you down.
-find an inexpensive roller, BUT it would be in your best interest to make sure a local hobby store sells spare parts for that brand/model.

[rcsammy]

thanks for the advice, looks like i will wait for the MMM
unfortunatly my lhs is very bad and overpriced so i dont shop there often, mostly buy my parts online... so the upside is that i dont have to worry too much about what chassis i buy
although i do like how the 8ight has the steering servo and receiver box way at the front which would make mounting the receiver easier/neater

will i need a BEC or a low voltage protecter if i use the MMM controller?
and what sort of runtime would i expect with a 4s/5s lipo pack?(unsure of mah yet need to have a look around... maxamps are cheap are they any good?)