Welcome! Another Colorado frogger! I actually live in Cheyenne, but I spend a lot of time in CO.
It looks decent, but I do have some notes.
Whats That brom doing on the side of the wall? never seen that before. I am not sure how well that is going to work.
Did you get a glass top to replace the screen? I can't tell. if you didn't, you should, as that would be extremely helpful in keeping humidity up.
Springtails...luckily, one of the biggest microfauna guys in the country lives in Denver! His bugs are legend
I'd hit him up for some springs. His username is Pumilo. And, it is a good idea to have some springtail and isopod cultures outside the viv. Here's how: http://www.dendroboard.com/forum/foo...ringtails.html
You can tell he has earned his nickname Doug the Bug.
As for the flies, they really are very simple to culture. I wouldn't put them in a drawer though, as they could suffocate. All you need is a big bowl to work over so when you have to open a culture (as long as the flies you are working with are flightless), escapees will hop into the bowl and won't be able to get out, so you could feed/make another culture with the flies that are in the bowl.
Do I think you could house a pair of azureus in that tank? I don't know the dimensions. It looks wither an 12x12x18 or an 18x18x24. both would be suitable to house a pair of azureus in. And I would feed an adult pair of azureus around 50 flies or so for the pair, maybe more for young'uns.