Hi there, this is my first post hopefully it is welcomed. Just want to check a couple of things
What is the temperature on the basking spot? The cool end and night temperature seem all good.
The compact UVB bulbs are not great so really good choice with the t5 arcadia, I assume you went for the 12% D3+ tube (I started using this - the beardy was much more active than previously I have to say).
Your bearded dragon should not need a hide, by all means turn it around and let him hide from the front of the tank. Try set this up so he will always be receiving UVB light.
12 hours of light per day is all good.