In order to give more support, we added a support beam across the two middle legs. We thought about a few different ways to do this.
For the outside legs we decided to use simple folding legs with hinges and support braces. These fold across the width of the table instead of the length so that the legs could be longer than the sides when they folded down. If they were not longer than the length of the side then the sides would hit the ground when they folded down.
Next up is the finished table!