I've only used it a couple of times, at detailing meets and am myself not particularly convinced by it as a product... But cure time wise, I apply to the whole car and then remove, so it sits for about 30 mins, then I apply a second coat the same way. Wax should go over it without any problems.
i found it applied best w/ a finishing pad and my flex, others apply by hand. and i haven't had a problem w/ putting carnuba over top of it. it seems ppl are recommending dry time of 12 hrs and cure time of 12hrs, although i think the bottle says 30 mins and 15 mins. i let it dry 12 hrs, cure 2 hrs for the first coat and dry 4 hrs, cure 2 hrs for the second only b/c it fit my schedule.
If I want to top a sealant with a nuba then Jetseal is the only thing I'll use. I apply Jetseal by hand with a 4" blue LC CCS pad on a polishing pal. Wait 15-20 minutes then remove. I then wait another 20 minutes and apply a nuba. Looks incredible.
If your going to top jetseal with a carnuba just get Cg speedarmour357. its basically jetseal with carnuba. Looks just as good as jetseal. Both products look great. I leave either on 20-30 min. with no problems. You can leave it on for 2 days it still won't last as long as zaino.