Aren't you making a low frequency inverter with a higher frequency PWM signal that is actually not very high?
Then you do not need those huge power transistors to drive the Mosfets, ordinary little transistors will be fine. But the big transistors will work if that is all you have.
Then you do not need those huge power transistors to drive the Mosfets, ordinary little transistors will be fine. But the big transistors will work if that is all you have.