powellt28- Welcome to Autopia!
Doing all three steps in one day would be a considerable undertaking and most people find that this stuff takes far longer than they expect it will. I'd allocate two days if only so you don't feel rushed/under pressure. You'll see how long it takes *you* and then you'll know for next time.
Even mildly abrasive polishes are safe for clearcoats. You can polish many, many times without taking off too much clear as long as you're not too aggressive about it. I've polished some of our vehicles dozens of times without trouble. And often, polishes containing (mild) abrasives are easier to use. Just don't use something very harsh (those aren't suited to hand use anyhow) and you'll be fine. But there are many good choices both with and without abrasives.
If you really want to try a nonabrasive polish, one that would compliment your NXT would be Step #2 in the Meguiar's Deep Crystal line. You might even want to use their Step #1 first, right after claying. Most people find these products quite easy to use and they're commonly available.