Well I wa wrong - fox may not be trap shy, just very fast.. Interesting. You may not need to drill a hole in plate if you can wire meat on by just wrapping wire - you just need to slow fox down a bit, it seems. Maybe you will get him tonight.
The easiest chickens to sell are pullets- young hens - about to hit laying age. If your roo is from a good laying breed, his offspring, even if mutts, should lay fine. Issues for you are - cold hardiness (Leghorns and otther single comb birds can get frost bite), egg color and size, feed to egg ratio, do they forage, and so on. Maybe get a few females to match your roo, so you can offer some pure breeds. What is popular in your area?
Also feed cost to get a chick to 2 to 4 months can be high. If you can only sell a hen for 10 bucks you might be losing money - often you can get more. You can and should add grass weeds and so on to their diet, as I bet you know already. Drops cost to feed, better for them.
Good to know raw goat milk tastes good. We make cheese (from bought milk sadly), and it's not hard - yogurt is even easier.. Your husband might eat goat milk cheese. Google how - you can buy all you need on line - start with soft cheese (easy) and work up to hard ones. Chickens love yogurt. Just know goats need to be milked daily.. You need backup for vacations - someone who can milk for you.