Looking good, but one thing I do not like about Crossfire's design is the ventilation system. The whole system is awesome apart from that. Having vents like that with no fan to suck air out from time to time renders the vents practically useless. Vents will small openings will will allow air to flow through yes, but imagine being stuck in a handicapped toilet and the ventilation fan turns off. Stay in there for an hour and you'll start sweating and the air gets stuffy, right? I'm not sure if beardies feel this way, but I'm sure stuffy stagnant air would suck for any living creature. Weird as this may sound...You should check out some of the DIY indoor marijuana grow closet/cabinet plans they have out on the internet. Air flow is important to plants(and all living things)to THRIVE so these guys know their sh!t when it comes to air flow. For one, the vents pulling air in should be at the bottom and the fan should be at the top of the viv. A good old computer fan will work, you do not need an amazingly strong fan, just something enough to create some air movement in the viv since there is no screen top.
If you are afraid that constant air flow will cause temperatures to drop in the viv, then put it on a timer to turn on for 5 minutes every hour. There are many ways to get around keeping temperatures ideal in your viv. Just my 2 cents worth! ^.^ We're all out to make our beardie's life better any way we can right?