We are aware of a couple user who have used the controller for similar application. Others may be on this forum.
The AX2550 will work fine. For odometry, you should order the controller with optical encoder input (AX2850) and mount an optical encoder on the motor shaft, or somwhere else in the gear assembly. We have seen good success reported with the usdigital products. <A href="
www.usdigital.com" target=_blank>
www.usdigital.com. This will give you extremely precise distance information.