You're probably going to want the humidity higher than 60... with that heat lamp on, the air will dry out quickly. When I left eggs in with my female last year, I kept the humidity at at least 70 percent the majority of the time. The cage would dry out a bit during the day, but I'd mist again as soon as I got home, then again in the morning. I kept temps about 80-90, and sometimes a bit higher. Best of luck to you.