Hi,
I’m planning to use Pixhawk with my HAL hexa, it is totally stock build, motors are NTM 2826 1000kv with 10x4.5 slow fly props, Afro 30amp ESCs, 3s 4000mah 20c battery. GPS will go on the top of plastic dome/cover. Will this setup be enough for non-acro…rather lazy flying? I wish to ask for your suggestions and precautions. 
Regards,
Usman
Just perform all necessary calibrations in the correct way and you’ll be fine.
copter.ardupilot.com/wiki/initia … -hardware/
copter.ardupilot.com/wiki/initia … esc-motor/
Also some tuning may be required
copter.ardupilot.com/wiki/tuning/
copter.ardupilot.com/wiki/autotune/
Please try it 