BlackSunshine - Once you finish polishing, you can remove any tape. The
AIO/SG/Souveran won't be a problem on trim, in fact, it's what I USE on it. But if you plan to use a ERV dressing on it, then that would be different. In that case, remove the tape and clean up any polish residue. Then retape and do the AIO/etc.
When you go from the PP to the AIO, watch that the AIO doesn't uncover marring you didn't get (to your satisfaction) with the PP. Go back and repolish if you find any- the "wax" in PP can act as a filler.
If you run short of time, don't worry as long as you get some
SG, or even just the AIO on there. In a worst case scenario, even (just) the wax in PP will provide more protection than you might expect, so you could do the AIO/etc. next time. And you can add more SG after subsequent washes until you build up as much as you want (*then* top). As others have said, spend your time and energy doing the prep work, i.e., the polishing.