So if I'm reading this right, your "legs" are 3/4" thick, 2" wide, and 29" long. That strikes me as a little light for the load in question. I don't understand what the front and back are going to look like at all. I also don't quite understand the...feet? Are we doing lap joints with boards at the bottom?
You're attaching whatever the front and back will be with L brackets?
What tools do you have available to you?
