Rent the Bosch breaker from Home Depot for small jobs like yours.
I had a crew out here removing a couple of hundred square feet of it recently. 8 inces thick. The big ingersol Rand jack hammers were going all day for two straight days (the noise was unbelieveable) and then it took 2 days to haul away.
Fortunately all I had to do was give ocassional instructions and keep everyone supplied with cold water
