I don't want to reinvent the wheel.......

My goal is to have a continuous supply of brood frames to supplement my hives.

My plan is to place 4 queens (with 2 frames of brood? each) in a 4 compartment queen castle.

When a compartment is bursting with bees I remove a frame (place it in a weak hive)
and replace it with a frame of drawn comb to be filled again with brood.

Is this a workable plan? Am I missing something? Any input would be appreciated!