I'm the guy with big dreams, a small budget, a mortgage, wife, two kids, 12 chickens, a pig, and two dogs. That being said my welding table ranks kinda low on priorities.
Over years I have collected a commercial solid core fire door that I later mounted to a 2x4 frame. Welded all over it with minimal burns. One day I got a HUGE sheet of 3/8 steel that I cut down and mounted to the top.
I'm on hiatus from working on stuff dammit! After several consecutive years of fighting the elements and building my turd on gravel w no roof, I prefer nothing to do!
Weld where you can and what is easy. It's the process that makes you better IMHO. A fancy welding table is cool, but its really the least important thing. It would be amazing if someone counted the hours I've spent in gravel shimming stuff up and stacking dimes.