About the only thing not on your list is electricity. I tried figuring the cost out one time for my Lee Production furnace, and it was such a small fraction of a cent per ball or conical that I call it free.
Lead is where you find it or buy it. You want it as pure as you can get it for most muzzleloader uses, but grab the alloys you can find too. They're useful for casting centerfire bullets. The Lyman cast bullet manual lists the average alloys from different scrap sources and that's useful. It's also got useful guidance on procedure and safety if you haven't done it before. Loads of data for your centerfires, but next to nothing on MLs. For data, instruction and safety with MLs, go ahead and buy the Lyman black powder manual, too.
As for accuracy- no penalty if you use the inspection procedures already described. I'd go ahead and weigh the conicals on the potential that you'll shoot them further. Inside 100 yards small variations won't make all that much difference, but beyond 100 every variable has a price, accuracy-wise. In the conicals you also have the potential of better accuracy from your own casts, simply because there's a wider variety of molds than store bought bullets, unless you track down custom sources. Each gun is going to have its own taste in bullets, and they just might not be the ones you see every day on store shelves.
Over and above all that, I gotta say it feels pretty good to be hunting with bullets you made yourself. Get into using the deer fat for making your own lubes, and maybe using the horns for accessories and the hide for clothing, and the whole muzzleloading thing gets real "personal." I whacked a deer using a rifle, RB, patch, lube, powder measure, horn, loading block, bag and deer call I made myself. Somehow it just tastes better!