Hey, that sounds stellar! :)
I don't have preferences for file format, as I said, I don't understand much about sound and music. All I know is that godot can work with both, so whichever you prefer or think is better.
I'm currently pulling an all-nighter (3.38 AM here :D), and I'll probably have to sleep a bit, cuz I got work tomorrow, so I won't be very active for some time, so if you share them here, that would work well for me, if you don't mind that. :)