Want to start a brushless speed demon.

[sharkattack99]

so what kit would be the best kit, (please be specific as im still not familiar with all the names of different kits) would be the best kit to start with 60 and work my way up to 100+ with out have to buy a new kit every time i want to go faster? prefer off road cause like snellemin said when i done with my need for speed i can slap on some off road tires and have some off road fun. what motor would be good to start with?

still working with my savage x brushless but i think im going to keep that a basher.