I'm new to to cresteds also. From what I have found while researching on the internet is that they need a dry period mid day as much as they need the humidity during the morning and evening hours. As long as you mist twice a day you should be fine. I wouldn't use any heat bulbs unless where you keep him/her is extremely cold (below 65-70 degrees). Other then that looks like you've got it pretty much. The live plants do help regulate the levels of humidity in the tank and for that reason I have one in mine. I use eco earth and as my girl does make a mess of things by digging a lot it looks nice and she seems to really enjoy it. The others that I have are all on paper towel as a substrate and have a few live plants in each of their tubs. I just make sure to spray the walls of their tubs so as to not saturate the paper towel cause this can cause illness if the cresteds decide to stay on the ground level for long periods of time.