Guys....yesterday I email hacker,and today they reply my email...
Thank you very much for your mail. The A50-16l with 10S lipo and the APC-E
16x8 will be a good setup. The current in this setup is ~54A.
With more cells/voltage the prop has to be smaler. Otherwise the current
will grow up very high and the motor/esc can be destroyed.

>>> more cells > smaler prop
>>> less cells > larger prop
Best regards
-OKY-
Note:
Within 3 weeks,I have regular a schedule flight,so I can't share how my setup works.
.