Many people have different methods. I can only tell you what I do. I also use a hovabator. For me the ideal temp range is 28.5-30.5, with the average as 29.5. Hotter can be ok, but the babies tend to be less flighty at around 29.5.
Humidity is much more important than temp though, and I like a range of 90-99%. If it gets too much lower the eggs can start to dry out and collapse.
To keep the humidity super stable, I keep a sealed lid on the eggs, I don't open it at all for first 3 weeks, then air for 15-20 seconds weekly after that, slightly more frequent in last 15-20 days of incubation.
I use a digital thermometer/hygrometer and have the probes inside the container. Just make sure no condensation is forming on the lid or the eggs.
I have about a 98% hatch rate using this method over a number of years. Good luck!
