For your application, almost any of those will work, EXCEPT for the momentary switches.
We are switching 12 volts and almost no current, so there is no real current concern. Get something that looks nice, mount three of them in a convenient location, but a location that will not get too wet. I am thinking under your helm, or maybe near your stereo? the automotive switches that look like rockers would be good choices.
You might be able to get marine dash switches from somewhere too; I do not know a good source of the top of my head, but someone might be able to chime in; I think TigeMike has recommended some in the past...
Run your blue turn-on wire from the radio to all three switches, then go from each switch to its own amp.
It is really rather easy...
Phil
Kicker