For construction of the cabinet, I used a couple more ideas from 1-UP. I liked how he had his Casters placed. I decided to build my frame base similar to his with the Happ 3" casters in the back and the Home Depot Heavy Duty Swivel 4" casters in the front. I also have a door in the front and a door in the back.
I also decided to place a couple of 5" Happ cooling fans in the base and added a vent to the top back behind the monitor.
I couldn't find any 1x1's at Home Depot, so I used 2x2's throughout the whole project. I used 3/4" Oak for ALL other pieces (not sure why, just wanted to claim it was solid oak).