No worries…
You can source several places… I find MOUSER electronics a good draw. They have a great catalog if you’re into that type of thing.
They should have something for breakaway contacts. As for PTT switches, you might look at some of the aircraft parts sites… Good stuff, built for hard use.
I’ve done a bunch of cruisers… Stop back in if you need a push…
Good luck! Let us know how it turns out…