I use the TP2000 3s in my MLST with a 7000kv motor. Loads of fun. That battery has held up great for 2 years as well. Worth every penny IMO. Is that battery too large for your app ? If so, i'd go with the TP 1320. 800mAh seems kinda small. If you did them up 2p though, you'd have 1600, which would be decent.

J.