I have had the same cabinet for about a year now. In the course of using it, I made some modifications that made it easier to use:
1. Built a frame to hold a screen, mounted the glass and frame on it and then attached the assembly to the top with a piano hinge. The screen is ordinary window screen and protects the glass quite well without interfering with the view of the inside. The glass gets dusty after several hours, so I made the screen removable so I could wipe off the glass. With the hinged top I never use the side door.
2. Replaced the light that came with it with a 20 watt light stick - basically a single single 20 watt bulb encased in plastic, originally intended to be fastened to the underside of a kitchen cabinet.
3. Bought a 900 cfm dust collector from HF (stock number 94029) and attached it to the exhaust port. I think it is at least 3 times as powerful as a shop vac. Unfortunately, I burned out a bearing after several weeks of use due to contamination from the abrasive dust passing through it. I found a replacement bearing at Ace Hardware and repaired it and now have a home-made filter box between it and the blast cabinet.
With all this, I'm still way under the $1,200 or so for a commercial blast cabinet with dust collector. Now, I am lusting after another HF blast cabinet, stock number 94274, which almost 4 feet wide, 2 feet deep and has two side doors and the front swings up. Problem is, I don't have any place to put it.