@84Brian not sure how hot you get but mine are all being rooted in full sun on a hot pavement. In my early days of rooting my first few cuttings, I was told that bottom heat is helps speed up the rooting. So all my cuttings that are rooting are in full sun.
Take a picture and share your progress. There are other members here who have rooted a lot more cuttings than I did.
The majority of my plumeria collections were seeds I rooted in 2013 or seeds from my own plumerias.