I should also say that my shop is about 65 degrees and I found that the recommended recoat time of 1 1/2 hrs was way too close together.I apply about six coats altogether and if you pile them on too soon,it takes forever to dry.I did better by waiting 12-24 hours between coats at that temperature.
To get a really slick finish,after about the 4th coat,very lightly sand with 1000 grit wet or dry,remove dust and spray.After the last coat is on,let it cure for 4-7 days,then sand lightly with 2000 grit.Follow that up with a fine rubbing compound like FFF or FFFF which will blend everything together and the finish will have a very silky feel.
You can kind of tell when it is cured or not by the smell.Once it is fully cured it should have little or no smell.You don't want to do that final rubdown too early.