A few more questions on temps... I know the warm spot should be low 80's to low 90's... basking spot maybe slightly higher; cool side should be 70-75.

Is it okay to have an 80 degree cool side? The RHP heats the cage quite a bit, but maybe it will be a lot cooler under the rocks.
Should I do any kind of night drop? I know they can go to 60's no problem in winter, and maybe it would seem more natural to them? Maybe giving them cooler temperatures at night will benefit them in some ways...

Also humidity isn't a real biggie right? With them being a desert species...

Thanks!