Nice ... I so need a good drill press! Those cuts into the tube ends really chew up the hole saws, don't they!
For steel, i don't know how close it is to you, but there is a NC branch listing. (or maybe was, they're link doesn't seem to work within this site, but the phone numbers are there.) PA Steel is reasonably priced and sells to the public, no matter the quantity. I paid .90 a foot for the 1" .095 wall tubing through its allentown warehouse.
http://www.pasteel.com/