You are good to go I use two A123 2.00mAh in almost all my planes includind my extra 42%. I can make like 5 flights before recharging, and with A123 you can recharge them in 10 minutes!
I have this setup in my Tornado and I can fly all day, I've made 8 flights before recharging, and the charger putted like 1300mAh in each battery.
I'm bulding a Feibao Panther with this setup.
I like very much the A123 batteries.

Regards