60% humidity is way to high and your beardie would get a respirity infection and become very ill.
Beardies live in the desert i.e. dry arid conditions, don't spray them or the viv at all.
If needs be you can give them a bath in luke warm water to clean them, let them drink etc.
the temps can drop to around 60f (15c) at night without causing any problems, if it goes a lot lower, get a ceramic bulb on a seperate pulse thermostat to keep the temps up.
Also please remember beardies can't sense heat from underneath so don't put any heat source underneath them.