Sorry for non reply above, still getting used to posting.
Handles: I've bought from House Handle (HH) and like the number of choices on handle length, and this is something you might not find at a hardware store. I do buy from my local store or Tractor Supply, but these are 36 inch. I do find some decent grain in some of these handles (like Truper brand who bought Collins Axe) and the thin layer of finish on them is easy to sand off for applying your own (raw linseed oil for me). HH has options to have them hand pick for grain, and maybe heartwood (more red) vs lighter sapwood, and they will remove the finish all for small up charge. The handles are worth checking out, but shipping adds up especially if ordering only one.
Hanging the head: I just use the wood wedge and no metal yet. They are holding just fine. There are people on this forum with lots of experience, who hopefully will make a comment. Definitely check out "An Axe to Grind" and use it for a guide. Old Axeman, who posts on this forum is the author. You've come to the right place to learn about axes, and the old posts found through searches and just following new posts can get quite addictive.
SwedeFP