Battery numbers from all 4 packs....
Batt 1: 870 mah ( First maiden and trim flight ) Kept it short
Batt 2: 2405 mah ( No timer, 3 of us flew it )
Batt 3: 2221 mah ( Timed 8 1/2 minutes in the air )
Batt 4: 2542 mah ( No Timer ) Just felt like a good flight
So I have plenty of mah's left to stretch the flights to 10 minutes easily.
The 17x8 prop worked well. But I am going to try a 16x10 then a 17x10.