I'm at level 77 and pushing to 80 this weekend.
What is your gearing strat for 80?
My plan is get Exp/Special/Poison capped ASAP then think about it as I know ArP will help finisher spam but losing one of the 3 caps I mention would be harsh. Mainly because of energy and poison reasons. And those are the specs weaknesses.
After the caps are met I think I will push ArP while keeping haste up and those 3 caps met. As more hit over them will just be more poison/melee damage.
Also I've been doing DP MH and WP OH, mainly since I need more AP for IP to average out to higher damage, I think the breaking point is ~3k AP. Also DP drops off too often on the OH for my liking with same speed weapons, BoA daggers.
Same daggers helps me not have to think about speed and DPS while deciding poisons and MH v OH. As of now I would lean towards slow MH n DP but would test it out a bit first.