rshnk90:
Sorry for too many questions, Is this good to go ?
Since you didn't tell us what the motors should do, it's hard to say if a solution is good enough.
At 11.1v the motors will turn a bit slower and have not at much torque as at 12v. But if you power them directly from a battery, you can't avoid changes in the voltage, anyway.
So more information about your project -> better suggestions.
lg, couka