a123s or lipo? again....

I'am very interest to make a 6s2p A123 for my 1/8 buggy for bashing session (because for racinc i've already a Flightpower 5000, 4s).

OK explain me three thing please.
First: wich charger can charge A123 cells? because i've a ICE charger and not sure if i can charge this A123.

Second: Must i balance A123 pack when charging? If yes, how could i make a plug to balance it?

Third: where can i buy it?

Thank you