60 Days is def the way to go.
I prefer ABE over OG (for the recomp effects) If you are just straight bulking you could use OG if $ is issue
Lots of people have had great results. My last great result was ABE/Versa1 I broke a PR with 90lb alternating curls, I could have hit 100's but decided against trying. I was one week from vacation and didn't want to risk injury lol.