You need the gear puller, or you can just buy a pittman arm puller for like $10 bucks, as opposed to over $50 for a good universal gear puller. You need 2 jack stands. I recommend having 2 jacks and some wooden blocks as well.
The torch is good for stubborn bolts. Also depending on what kind of lift kit you install you might need to change some brackets. The brackets are usually riveted for the frame so you can either spend an hour drilling out the rivets or you can torch them in about 2 seconds. Actually the torch spoiled me, instead of messing with old rusty bolts i just cut everything
I was scared to death of trying to lift MY truck but once i started doing it i found that it was easy. It can be hard work moving around some of those suspension parts but it was all straight forward. There was absolutly no guess work at all.
That first lift i did on my truck took 2 long (10 hour) days all by myself, outside in my stone driveway, in January, laying in the snow. I've done a few lifts since then and with torch's, air tools and an automotive lift i can do it in about 6 hours.