the one suggestion I'll make (that no one else did) is to SHOOT A TEST PANEL FIRST.

I can't believe how many autobody and custom painting forums have the standard "help! I shot clearcoat and it looks terrible!" posts because the OP did NOT shoot a practice panel first to see how the paint shoots, mixes, flashes off, etc,...

so take it from a painter with 35 years experience,...shoot a test panel first, THEN shoot your project bicycle,...even if you blow through an entire quart of clear practicing ($35-$50) it would be worth the time savings alone NOT to have to strip off the entire screwed up paint job, and start over.

even I shoot a test panel if I have never shot a paint type before, you'd be crazy not to,......but almost NO ONE DOES.

so, be different, do a GOOD job on your first try!

P.S. +1 on that centauri, or any quality acrylic enamel if you are concerned about isocyanate exposure. (which in your case would be minimal unless you painted inside, no ventilation, and no respirator whatsoever.)