Hey man! I've been reading some threads about the losi scte, and just got another roller and thinking of putting in the copperhead R45 combo. And I saw you had it! , i just wanted to ask a couple Q's... Hows the runtime? Do you have a external BEC? Would you reccomend it? What kv? And should I get that or do you have any others for under $225? ( a motor ESC combo ) thanks!!