If we're going to do an 'open source' design here, how 'bout combining the table top from the OP with legs like on this knock-down table:
[bunny trail]In my web wanderings looking for campaign furniture, knock-down furniture, ect. I have run across a few plans and pix posted by SCA / Renaissance Faire folks that are really cool. The picture above is a link to one. Check out the knock-down bed, a real glampers dream. And the knock-down wheel barrow pic at the bottom of the page is too cool, but I just can't figure out why I need one. Maybe for gathering firewood?[/bunny trail]
EDIT: The Mortise and tenon joints on the table I showed are a lot more elaborate than on the OP table, but I don't think they would need to be.