Suggestion for BL GST 7.7?

[aqwut]

it's 18.50LBs with 8S 3700 LiteStorms, MGM 24.160 w/ 2 40mm fans.. 2280 motor w/ 2 40mm fans... that's the weight with everything.. I'm afraid of the 19"
series because I've never seen any vids of them powering a heavy truck like this.... my setup's about 1.0Lbs heavier than the Stock Nitro version...

I'll probably be goin' 8S 5000 Mah FlightPowers or 8S 5000 MaxAmp packs....I think my next motor should be around 1100 - 1200 kv rating?.. Does that sounds good?.. because I had the 2280 5 Turn Hi-Amp version.. it was 1480 kv/ rating... The shear torque from that 2280 was such a good feeling... I don't want to lose that :)