The RC8 begins

[Snipin_Willy]

I'm just glad I was able to find a used RCM chassis kit for a very seasonable price.

OK motor people, consider this. Top choice for me right now would be a tekin 3D (1700kv) buggy sized motor. If I want to run on 5s and achieve 20min run time (minimum for race mains here), what size of battery should I be looking at?
My RC8T runs on a 1515 2.5D Neu and hits over 20 minutes. Would it be reasonable to expect 25minutes on a 5s 5000mah battery considering I'd be using a shorter motor, pushing less mass with very little difference in kv rating from my truggy?