If all you need is a frame why not get some 80/20 or openbeam material and just make your own? you're already committed to doing all the wiring and programming on your own and imo thats the hard part. 80/20 is easy to work with and all the brackets and fasteners you could possibly need are available through their catalog. They have distribution all over the place so there's probably a local industrial supply house that you can get it all from. if not, grainger or msc will get it to your door in a couple days.