vxl would probaly be your best bet because it can take up to 3 cell lipo or 10 cells NiMH(I think). The esc can take any motor whether it is sensored or sensorless. The motor is powerful and will give you the best run time. Also, the mamba max and xbr systems will sell better than the vxl.
X-Factory X-6 Squared w/17.5 Duo 2, Tekin RS Pro, 3PK
AE, X-Factory, Tekin, Trinity, Futaba, Proline, JConcepts, Team Orion
AMS Raceway, Larrys RC