bdog, I don't know where you live, but if you live in farm country, there are probably agricultural tire specialists, like we have around here. I've used them for my tractors. They're usually so reasonable, it isn't worth doing it yourself. They usually have everything they need on their truck, including a gas powered compresser, torches, tubes, and anything you can think of.
Last summer, I noticed that one of the rear wheel rims in my 1951 Ferguson was corroding. I got a new wheel rim at my local tractor parts shop, and I asked him what to do about removing the old wheel rim and installing the new one. He called up the local ag tire guy. The guy came over the next day. The wheel was original, and probably had never been removed for 53 years. He had to torch each bolt until he could break it. It took quite a long time. Then the rim was actually corroded to the axel. More torching. Finally he got the rim off, and put the new one on. Removed the tire, and the tube was shot. He had the right tube on his truck, he installed the tire and loaded it. Believe it or not, the whole job took over an hour and a half. The price, including the tube was $75. I think that was real reasonable, considering the amount of time it took.