If you can save $$$ by buying unassembled frames/boxes, do that, and don't waste $$ on a hive stand or bucket feeder when you can easily scrounge the materials at home for free. Put that saved $$$ toward a second hive setup, which will indeed save you money in the long run for the reasons explained above. Being able to compare between the colonies, or to use one to augment the other will be well worth it. If you lose your queen at the wrong time, with no other way to quickly replace her (or to add brood), you might become a bit disenchanted when you have to "try again" several months later.
Ditch the fume board, too, the first year. With only one colony, you can get by without it. Or, build your own. While you're at it, build your own tele cover. They don't have to have the fancy joints that sturdy brood boxes do.
Beekeeping is a hobby that can pay for itself (or at least help pay for itself), once you get to the point when you can give your surplus honey as gifts (or sell it to friends). And of course, you can make up a couple nucs each year when your colonies are established, and sell them to other beekeepers.
Only thing I'd add to your list is Benadryl! ;)
Welcome to the hobby, and to the forum!