Morning Bob,
I'm no battery specialist, but my only thought regarding a fully charged LiPo Rx bat is that it will not pose any problem for the 2 or 3 seasons you might expect to use it. However, I would note that the Eneloop Rx pack I am using is purpose built to sit on a shelf fully charged with less than 3 % degradation, and does not require a regulator, and has capacity to produce 10 amps for short bursts, and weighs the same as a 800 mAh Lipo + reg. Also this and a buck might get you a coffee in a diner, but below is a graph of my BEC output during an Intermediate Sequence which corroborates the same experience another fella did with an FAI Sequence servo test. The point is your BEC never sees even 1 amp max which means a CC Pro is way overkill and the Dimension Engineering VHV-BEC is more than adequate, but I know there is "More than one way to skin a cat" and that's what makes the world so interesting.
Anyways, still hoping to catch up with you and Anthony soon!
Joe
[link=http://www.dimensionengineering.com/products/vhvbec]
Dimension Engineering VHV-BEC[/link]
