This looks great! The only things that I did, and will do when I build mine again, different was that I built the top out of plexiglass, with a hinged plexiglass front. I put my fan in the back. This allowed the room light to fill the box, but I also had an LED strip on either side at the top.
Putting the hinged door on the front allowed me to close the door to keep out dust and keep the fan on to evacuate fumes.
I wish I had pictures of the box I built but had to leave behind when I moved. :(