That sounds like a great solution. I'm assuming you'll be keeping your receiver and flight pack back near the servos? I personally feel pretty good if I can get about 6 inches between any part of these items, including on/off switches and charge plugs. I've seen many models with the charge plug/switches on opposite sides of the model with good success... or about 4 to 6 inches. More is better.

I'm likely about 4" on my Decathlon, with the flight batteries being the closest items.

I've been using the SmartFly ignition cutoffs on mine with great success. These are optical links to the ignition. It can kill your engine even if you have a throttle linkage lets go. Of course nothing can travel back to the receiver through a fiber optic cable.