Thanks guys!
Now I have something to start with, so BK12020 (which I already own), 9XL & Two 6s A123 packs. Should be enough power. BK12020 is good to 6s lipos and 120A continous, so there shouldn't be any problem?
Ok, so now the motor setup should be okay.
Now I would need some good charger and (balancer) any suggestion for that? Criterion to charge both A123 packs at the same time..
Btw, do I need to balance A123 packs
?