Sounds like a plan get some photos up as you goI'm thinking of digging all the trays and stuff and lining it with weed mat and pond liner
Go onto you tube an start watching a bunch of video's of folks growing veggies in hydroponic systems. You can find lots of examples of stuff that could give you lots of ideas of how to apply it to what you are wanting to grow, small or large.
this is a large scale lettuce farm's video that I found on you tube
in this case, you tube can be a good tool for you to help you find a system that could would work for you.