I put a 2600 in a 50cc size IMAC plane a couple of years ago. I can get 5 flights on it, but I did do a separate battery for the ignition. I would expect the 2600 would work fine in your bird for 5 flights also powering the ignition. I'm sure you know about using a BEC to separate the circuits, but it's worth mentioning for anybody else who reads the thread.