If you've done drum brakes before you won't have any problems with these - it's just more time consuming because there is more involved to just get the drums off. It
sounds pretty intimidating, but all in all it isn't a difficult job with the right tools, some basic skills, and the right amount of patience (that's where my problem usually comes in

).
As far as the environment, all you need is a place to safely jack up and support the truck on stands (a lift would be better, but not many of us have access to one of them... ). Take your time, keep things clean, and do one side at a time so you have a mirror image to refer to for reassembly.
The parts for these things can be a little pricey, especially the drums. I paid around $100 each IIRC. With the miles on your truck the odds are pretty good that yours will be out of spec, even if they're not grooved. It adds to the cost, but while it's apart I'd replace the wheel cylinders and the hardware (springs, clips, etc), and upgrade to the 3" shoes - do it right, once, instead of halfway a couple times. Unless the adjusters are rusted together or show a lot of wear I'd just clean and lightly lube them. Don't forget to clean the backing plates well, and lightly lube the contact areas (raised pads where the metal part of the shoes rest). Another issue: the emergency brake cable retainers are a joke, and I had one pop off after reassembling everything.

A couple small worm-drive hose clamps are now keeping the cables in place on mine.
Just as a FYI, it took me the better part of a day to do my brakes the first time around, including several trips to the parts store to get the right drums, fighting with the hold down springs, and retrieving tools from various parts of the garage, yard, and street (I was just a bit frustrated

). It went much quicker the second time since I had the tools I listed, even though I took the drums to be turned and replaced the cylinders when swapping in the 3" shoes. Obviously I didn't do it right the first time... .
