RE: ofna servo
if your running all stock stuff you will need to be careful with the high end servos. Just things like the current drain from them would probably cause havoc trying to run them on 4.8V and and not being able to adjust your epa properly with a 200oz servo will cause problems. And I don't think digital servos mix well with am recievers and BEC circuits.
I'ld just make sure you check it all out before buying a $100 servo and finding out it doesn't like your reciever and pulls your radio tray of the chasis when you turn a corner.
I didn't have those sort of problems 'cause when i first fried a servo it was the throttle and it put in to a nice pool of water. so i went straight from rtr equipment too pretty much top of the line in one hit. [8D]