[amsat-bb] Semi-remoting the controller for a Yaesu G5400

My Yaesu G-5400 rotor pair is about 150' from my shack.

I am wanting to gauge the feasibility of putting the rotor controller within 100' (due to on-hand control cable lengths) of the antennas (in a garage).

I would then run a separate (on-hand) PC-controller cable (fewer conductors as using the DIN interface on the back of the controller) to the rotor controller box from a PC and adapter / interface (if needed) in my shack (approx. 50').

Is it crazy to consider or should I just pony up for more of the (dual) rotor control cable and run the control box itself in my shack?

What would I need to do at the PC end to appropriately 'signal' the 'semi-remote' control box.

Ideas?

Thanks,

Lowell K9LDW