Plasma and limited budget are almost mutually exclusive. I'm not far away from you so send me a PM and you can come and see the table I built which is currently at Acacia Ridge. I recently sold my plasma cutter with a view to upgrading to Hypertherm. I found out today I have some challenges with the wiring in the industrial unit I have just moved into that is a bit of speed bump for that plan, so I could be tempted to part with it...
In terms of getting stuff cut, assuming you have DXF files and PDF drawings of the parts, I'd just send them to Laser Central at Richlands and have them laser cut. I can introduce you or put it through my account. I had them cut and fold a number of parts for my machine. Having the bolt holes to mount the linear rails in perfect position and ready for tapping was well worth the expense...
This is what we are talking about...... It was not a trivial build....