8kg payload- lets do the math: kopter 3.5kg, batery 2kg if you use 5s 10000 x2, gimbal 1kg min. 6.5kg + 8kg payload = 14.5kg Maximum motor trust would be 4500g on 12s, here we have 5s (it would not lift at all) or 10s. 4x4500 is 18kg. So hoover is more than 80% on 12s, 10 only gives you less...