Removing springs is dirty and messy. It is hard work.
I was one of the luckier ones. When I installed the OME kit in my FJ62, I dod not have to do much fighting to pull things apart. I replaced the rear springs on my '40, and they were not too bad, either.
I recommend starting a month ahead with a can (or two) of PB Blaster. Use it on all of the nuts and bolts. Try to get it into the spring eyes, too. Do this for a week or two. Then, spend an evening carefully removing nuts, washers and plates. Spray more PB into the space between the bushing and the inside of the spring eyes and between the pin and the bushing. Use an awl, and force it into the space, and spray more PB in there. If you do not need the truck every day for commuting, just let it sit for a while. If you do need the truck, re-assemble and drive it for a week or so, before beginning the full tear-down.
PB is great stuff. It needs time to work, but I have been amazed at the places it'll creep into. It has a strong smell, though, that'll linger in the garage and on your clothing.
I think the best tool for extracting spring pins is a small, flat crowbar and a claw hammer. A drift pin is good, too. I also used a channellock plier and twisted my pins to help distribute the PB.
Don't plan on re-using any of the pins. They get banged up when they are being removed.
I have never had to use a torch on the bushings, but many Mudders report that heating/burning them out works where everything else fails.