977 is listed as a lipo capable charger -

http://www3.towerhobbies.com/cgi-bin...&I=LXLCJ6&P=ML



Using 2 balancers would work and it would be simple if using something like a Astro Blinky. Ideally you want to balance while charging and a Blinky would do that simply without a lot of additional wiring since it plugs straight into the balance connection of the lipo -


http://www3.towerhobbies.com/cgi-bin...&I=LXMRZ9&P=ML