With the gimbal and video Tx, I get about 6 minutes with the 3s 2700mah, and 12 minutes with the 4s 4000mah, and 15 minutes with the 3s 6000mah. If I take off the gimbal and vTx, I can make the 2700mah batteries last 12+ minutes.
Eyeball, glad to hear that you're doing well with 4s and 10"...