I have the accu-clycle elite.check it! http://www.rcuniverse.com/magazine/a...article_id=405.
I love this thing.you can do all the batts. And you can program 10 batteries. its really easy. it also those two batt at the same time..
1 charger for everything you have !!!! got to love that. get it, you wont be sorry..

well I guess the size of lipo is up to you. how long do you want to run for?
I think is best to get two normal size batteries , then i big one.
I have a lipo 7.2 / 2800 and going to get another. Its lite .. thats the key word..