Free GPIOS to be Used Safely on BeagleBoneBlack

I am interfacing an external peripheral to the BBB and require 5-6 free GPIO which are not being used or multiplexed with any other signal.I have chosen these GPIOs

P9_14/15/16/12/25 which maps to gpios - 48,49,43,51,60,117 ( not in order) .
I have developed a small application which interacts with the peripheral on these lines but i am having some issue.To debug as a first entry point I want to make sure wether the chosen signals correct or not or if somebody wants to suggest other GPIOs.
Thanks in advance.