Looks really good Quinn. I still use black cloth pinned up for my stand cover!
Venting your stand is probably a good thing.
The radio shack 4" fans aren't that loud but cost 35$ and I don't think I'd reccomend them.There are also these cheap 6" desk fans for 6$ at Walmart. I use these to cool my MH ballasts and blow on my sump. They're cheap and they work!! Is the back totally closed off?