First off, thanks for considering me for your detailing questions

As far using the clay bar you do wanna go side to side making sure the surface is well lubed with the detailing spray

After that I'd use a good paint cleaner, which cleans BELOW the surface of the paint. Now you have the top/bottom clean and ready for polish. A good polish brings out the true color of your ride. As for the finishing wax, I'd go with the new Meguiars NXT but if you already have those mentioned waxes, I'd go with Gold Class for sure

I'm pretty sure I'll be switching to Griots, but I'll always use the new NXT, I'm hooked on that stuff...BIG TIME