Thanks Lone Star Charles,
This was one of attractions I was hoping for using LiFe batts. Any part that can be omitted in the chain of power supply is one less for Murphy's Law. Also like they are more "user friendly" as regard use and storage.
Was going to stick with li-po and bec for ignition, but now will keep dedicated twin power supplies both with LiFe. (Had not thought about ignition side)
Thanks again for input.