The rule of thumb is, if you're happy with the finish, no need to use the PC with swirl remover polishes. Since you say it has minimal swirling and you're happy with the basic finish, you can move straight to the Z5/Z2 twins (activated with ZFX on the first coat), and follow the regimen that is repeated in here about 15 times a day (Z6 in between coats, followed by Z-CS and Z8 at the end). You could also just do AIO followed by the twins, or even straight to Z-CS after AIO. No need to use a machine buffer....works better to just thiiiiinly apply the product, let dry, and wipe it off.
I am lucky that I have a Zaino distributor within about 40 miles of me, and that I sometimes have work up in his neighborhood. So I can pick it up without shipping. If I were you, I would email
info@zainobros.com or call the Zaino tech people 732-833-8800 and ask them if there's a nearby dealer to wherever you are in Colorado. These links are from their website,
http://www.zainostore.com. Otherwise, just order it online! Simple.
By the way....no fear. It's a no-brainer. Just follow the instructions and use less than you think you should. No...less than that. Wait....less than that, even.
Good luck.