Flaxen if you're going to go aerobatic, I recommend getting a lighter-weight LiPo. Yes, you'll get shorter flight times, but it will give you much-needed lighter flying weight. Also, this is what E-Flite recommends for aerobatics. Also, I suggest you go down to an 8T motor if you're still using the one from the acro kit (which is a 9T), as this will give you more torque with the blades and will help keep the heli more stable, keep your motor cooler because it's not working as hard, and improve your flight times because you're not pulling as many amps. I would get over 20 minutes of flight time with the 1320mah batt and my 8t motor, but since things were getting heavy with all the aftermarket radio equipment I added, I was an ounce over stock gross flying weight so I went down to a 900mah LiPo (that and I managed to overdischarge my 1320 pack ) and now my heli weighs a mere 10.5 ounces, and I get just over 15 minutes of good flight performance with the new pack. That and it's MUUUCH easier to fly the heli. Also, now that I've gone to Carbon Fiber blades, performance has gotten even better. They're far tougher than wooden blades (but not indestructable!) and they're lighter too so you get better performance, more rigidity, and more durability. They're the cost of two wooden blade sets, but it'll quickly pay off after you have a couple light blade strikes that would render most wooden blades unusable. With the CF blades they don't even fray, dent, or scratch (at least in my experience so far)! They'll quickly pay for themselves.

So I recommend going down to a 900mah batt, an 8T motor and some carbon fiber blades, and you should be jammin'.

Ah, tomorrow morning it shall be time to practice intense flight and working with the Idle Up. Can't wait!