Welcome to the forums, and hello there Chooch!
Great looking tank, and while some might think you should start a baby beardie in a smaller tank, I started my beardie 9 days ago in a 10 gallon, but already have moved him into a 40 as well and I think he loves it!
I'm looking at your pictures however and am immediately concerned. I see only a single lamp, so I need to ask what kinda bulb, what brand and wattage is it? Is it a UV light? A basking light, or what?
From reading these forums and the help I got, it would seem you'd need your lighting and heat to look closer to this like I ended up setting my own 40 up:
In the back I have a REPTISUN brand 10 UV 24" florescent bulb (17 watt) in a plastic 24" florescent fixture. I bought the fixture at Lowes for about $14 and its actually in the "undercounter light area", make sure you don't buy the big metal florescent light fixture that costs the exact same amount. You want the 24" all-plastic kind that weights like 1 pound or less. I used 2 command hooks to hold it up in the back of the tank.
Lowes also carried "shop light" type lights that are only about $7 each and can hold 150 watt bulbs, so this should save you some money over buying the pet store lights. As you see, I have two of those on top with a 100 watt basking bulb in one (the one I bought is made by Exo Terra and was only about $6 on Amazon.com) and in the other shop light, I have just a basic household 60 watt bulb. The 100 watt basking bulb is placed over a rock or log for his basking area and the household 60 w is just on the opposite side for his "cool side" of the tank.
If you don't already have one, pick up a temp gun such as this one I bought on Amazon for about $18:
http://www.amazon.com/Accuracy-Non-...id=1386727633&sr=8-3&keywords=temperature+gun
This gun is VERY important because the gauge style thermometers will not give you accurate enough readings, especially for his "basking area" under his basking bulb. With the gun you can get pin point readings for any location in his tank and they will be much more accurate.
Make sure you don't use any coil or red colored lights as they, like the UV bulbs can cause eye damage to your beardie. (I'm giving all this info on what I have learned here, so someone please correct me if I give out any bad info please.. as I am a newbie beardie owner myself)
Also no sand, dirt or other substrate as your beardie is very curious and very well might eat it and it could cause a very serious "impaction" issue (This ailment is explained in much greater detail in the "Top Content" links from the home page of this website) Instead use paper towels you can change our regularly or a reptile carpet at the bottom of your tank.
This should get you started on the right track. As you go along, if you have ANY questions, please feel free to ask and I'm sure that myself (if I know the answer), or someone else will be more then happy to answer your questions and help you with any concerns you may have!
Chooch looks like a great beardie, and I hope that you get as attached as I already have to my own beardie in my first week of owning one!
Good times!