That is a good writeup, but I skipped 1/2 the steps. I also went with the iridium NGK plugs as they work great and don't have to be gapped. Also, I didn't pull the bolts for the intake hose in the first post, and didn't pull the brace for the driver's side plugs in step 5, just the vacuum hose behind it. I used a swivel on the extension and it worked out fine. It's a little harder to get to, but not too bad.
It's really not that bad with a swivel extension, spark plug socket, and a little patience.
For Tires, I love my tires (check teh link in my signature) but they may be too agressive for your uses. I'd recommend the Grabber AT2, kumho Road Venture AT, or the Yokohama Geolander ATS, or the Wrangler Silent Armor for some agression on the tire along with a highway ride at a low price.