Elad, sounds like you have your building project! As far as battery charging goes, sounds like you need a trickle charger. That way your batteries will be ready to go without overcharging them. I think ACE has one called "Add a Trickle". You just solder it on to the wires of you Futaba's charger. You charge your batteries and the flip the TX and RX switches to trickle. That keeps 'em up and ready to go. I think they cost around $20.00. Only take a few minutes to do the soldering. By the way, hail and rain, today, 42 degrees.