@shishioude here are some options:
You could drive those motors directly from a 6HC main board. They would run in open loop mode and the 6HC would be running close to its maximum current, so fan cooling of the 6HC would be advisable.
You could mount one of our magnetic encoders on the back of each motor, and use one expansion board 1HCL to drive each motor in closed loop mode. Fan cooling of the 1HCL boards would be advisable.
If you want to use external drivers (either open loop or step-servo drivers), choose the 6XD main board.