You shouldn't be using macros for battle at all, to be quite honest. They are deliberately designed to be less effective for it.
To answer your concern yes True North will be used again next time you press the button.

But here's the thing, you can't queue up a macro like you can skills directly. The invisible skill queue that allows oGCDs to function and GCDs to fire as soon as they're able to is not used when executing a macro. You'll probably hit the button multiple times before even getting it to work, it wouldn't be as fluid as simply pressing the buttons manually.