Those motors are 3A rated at 285 ozin in biplolar. They would run well with either the Gecko 540 unit with a 48V power supply or the G251 individual drives. Larger Geckos on those drive would be over kill. You should see a lot better perfomance with the Gecko. The whole g540 (4 axis) only costs $299.00. The G251 would be more but offers more flexibility.
Totally Modular CNC Electronics