here is a company in Canada that does what you are thinking of but on a more full scale
I would think you could offer some aspects of what they do on your own and do ok with it
http://www.garageliving.ca/
Here is a great article and plan for a simple workbench
http://www.rd.com/17667/article17667.html
I built a version of this for my basement workshop and I find it functions very well
