See attached for modified design, including all relevant connections just to make it clear whats being attempted.
Leaving the second j-k open for optional connections later off board.
Added a cap for basic debounce circuit with a solder jumper for control with a I/O pin if wanted.
Don't worry about the S_SELECT going to that half deleted chip (in picture) its just to represent that the j-k Q is controlling a enable pin, and a led on a op-amp.
I'm fairly sure this will work as intended, I can't think of any reason why it wouldn't.
