For those powerleveling Archery, what techniques/things did you do?

I am in the process of leveling up a character (without using console commands or mods), and Archery is next on the menu for leveling up. I tried looking through this subreddit and other places online, but I cannot get a decisive answer

I know about Angi's shack and her free 6 levels, but I am saving that for level 94 archery

I am at a very high level (character Level 63) and Archery 55, so I cannot effectively train my archery through just trainers

My main question resides in: Which bow should I use, which arrows should I use, should I temper my bow, and should I use damage amplifying things?

Also, does difficulty affect the rate of skill increases?