Commerce grad's chances at cracking GMAT big

MBA
1

I am presently in FYBCom,preparing for my IPCC attempt due this May…I am quite confident about clearing CA…so here’s the question-do Commerce grads stand a good chance at getting a 700-720+ score in GMAT and getting into the likes of Harvard/Sta…

2

I am presently in FYBCom,preparing for my IPCC attempt due this May..I am quite confident about clearing CA..so here's the question-do Commerce grads stand a good chance at getting a 700-720+ score in GMAT and getting into the likes of Harvard/Stanford etc,or is it too heavily biased towards candidates with an Engg/Sci background?..Also,how many months' preparation is ideal to crack it?
Cheers.