First I would get rid of the standard table set up. They tend to block people from getting up close and personal at a show ... and in doing so, I truly believe they block sales!
IF baby is your theme, then I see you setting the stage with three pieces of furniture ... a crib, a small dresser and possibly a change table.
It will take a lot of organization and planning, but with some prep at home along with practice set ups, you can do it! The time restraints make it quite difficult ... you need to be organized and practiced the set up several times in advance. The quickest and best way to accomplish it will be to have extra bodies to help you, to make sure you can meet the time limits.
Is there a fast assemble baby crib? Or bring it assembled and just carry in, as such.
I visualize, quilts folded and hanging over the edge. It would give people easy accessibility to touch and feel ... which I suspect would encourage sales, rather than a static display with the "no touch" feel!
Extras can easily be inside the crib.
Perhaps an extension could be created to mount on the long side of the crib, and give you height for more hanging space.
I also see a small dresser, that could be carried in, with the drawers filled. High enough, so you are not stooping all the time, and so that you can work off it, as your "Office". It would have whatever supplies you need (invoices, bags, tools for set up, etc). If you have smaller items for sale, extras could be stored in there.
The third might be a baby change table .... again to set and drape your items.
Have things bagged/labelled before you leave home, so that you know exactly where they go at set up time, without having to think, what is going to look better.
Bonne Chance!