Yup, I see the list coming together.
Everyone will have a different setup, but all the essentials are emerging.
For killing, a cone or two, depending on the number of hand available for plucking, and some way of rigging them off the ground. Same rule applies to hanging by the feet for the job.
For plucking, a large pot and a burner big enough to overcome the heat loss between birds. Temp is critical, so the thermometer will be, too. Heavy rubber gloves, maybe large enough that you can wear a jersey work glove inside them, will help with the dunking and sloshing part.
From there, a table or two, for plucking and gutting. It's hard on the back with a low table, so the higher/closer to a good working height for you the better.
Once they're plucked, I generally use two knives. A heavier one for cutting off heads, feet and necks, and a small slicing/filet knife for around the tail end. Sharp is important, as is a having a steel around to help keep them that way. There are spoons/scrapers made just for the purpose, but any large spoon will work to scrape any remaining bits of lung/kidney from the inside of the carcass.
An odd thought. Having a few zip-ties around can be handy for those embarrassing moments when you discover that you've nicked the bowel near the vent. It happens. A ziptie is just the thing to quickly cinch off the upper section. Don't ask how I learned this but it works. As soon as you recognize the nick, STOP. Cinch off the bowel, finish opening up the bird, and rinse, rinse, RINSE with running water before going any further and attempting to remove the gut as a whole. Rinse off everything you can see and then rinse some more before proceeding.
Which gets to the supplies for sanitation and safe meat handling. Limitless running water is essential. A clean hose with a variable spray trigger gun is just the ticket. Chilled water, and the containers for it are a must. Their number will depend on the routine you develop. It's purpose is to chill the meat, keep it from airborne contaminants while waiting for the next step, and provide something of a rinse at each stage. If you were to work through one bird at a time, start to finish, you could get by with one tub at the end, to hold them before packing, but would want to rinse them with running water after plucking and before gutting. If larger batches at a time, a tub of cold water to hold them between plucking and gutting, perhaps another between gutting and any last work on broken and pin feathers, and maybe even another after that just as a rinse, if not done with the hose.
For work surfaces, utensils (and hands!), whatever number of pails, dishpans, or the like, necessary to periodicaly clean off work sufaces (brush, maybe squeegee, then hose those down), and for periodically cleaning knives and other tools, you'll want to have plenty around with a mild water/detergent/bleach solution, rinsing well after any cleaning done.
If you find anything getting too messy or dirty, stop to clean it up. This includes changing out any water or detergent/bleach that is looking murky or has a lot floating around in it.
For personal comfort, (what with all the water have around), rubber boots and a rubberized apron or bibs, will be handy.
Hot water, cold water, water to disinfect, and the things to keep it in. Sharp knives and sturdy work surfaces. Pails and bags are helpful for catching blood and disposing of feathers, heads and so on. Those are the essenials. If you can do it in a shady spot, all the better!