Good for you! I think it's great when people take action to try & solve a problem, and not just complain that "nobody's" doing anyting to help. I hope your experiment goes well, I'm sure you'll at least learn a LOT throughout the process.
I just learned to caponize this year, and only lost the first one. I tried cutting something I was just supposed to grab, and the poor guy's cavity filled with blood and he died within minutes. He wasn't a total loss, because we turned him over & operated on his other side and learned just what to do & how to do it. I haven't lost another one since.
Read through that post on caponizing really well to gain the knowledge other folks have learned while doing. I found the most difficult part was seeing inside the bird to grab the right part. Next time I'm going to use one of those lights that strap to your forehead & try to get some magnifying goggles or something. My over-40 eyes have difficulty seeing up close. I think that's going to be difficult when you try to operate on 3-week-old chicks, their parts are going to be really TINY.
You're tackling a lot of big issues here, corporate waste, kindness to animals, economy, hunger. I pray that God will continue to guide you & give you wisdom as you go. I believe that He is pleased to see your ambition & your concern. I don't know if this will be the direct answer to the problem of scarcity of supplies at the local food banks, but it's sure a great beginning. At this time it may be more beneficial to folks looking to get back in better touch with their food sources & wanting to be more self-sufficient even though they may live in the city/suburbs.
I wish you all the best of success, do keep us posted!!!