Very cool!

The caster set up is really cool!!

I built it first with the casters on the bottom of the legs. The problem was the padding in the seat. Skater put so much in there that my feet were like 10" from touching the ground. I set the base up at the same height as my regular office chair, but the bottom cushion was so thick that I was to high. I made the angle brackets to lower the base of the seat down. That was all that I could come up with. It actually worked out pretty good by making it wider and giving it more stability.
Thanks everyone for the kind words. It was a whole lot more work than I expected, but worth it in the end. I have a cool office chair that you can't buy at the store. That's what I was after.
Eddie

Eddie sweet place for your rear end, but I doubt yours spans the nation...