I'm installing a 12oz tank and hope to get 10-15 minutes running a DLE-35RA. I'm running 8 Savox SAV-0221 high voltage servos, a BEC (so I can run ignition and the radio on one battery), and one 2S 2550 LiPo. I have a variety of LiPo's sitting around so I'll check and see what I use per flight up front and change out the pack as required to get 4-5 flights + about a 50% margin.