If you do go with a brake 1 thing to consider is that the A & A brake I used you have to hold the button to use reverse so I had 2 buttons mounted because it was tricky backing up while button was on the steering wheel just FYI
My Compuflow PG brake is the same way (their external solenoid brake). I mounted a toggle switch to the TB circuit to make backing up while turning the steering wheel easier. Don't have to use the button for backing up anymore. If I am just going straight backwards, the steering wheel button gets the job done.
