Pvp and get the 4500/5000 zen beans for Move 3 of lightning draw and use that. Get the 3 offals for HM Z and that's all the HM skills you need for lightning build. Move 1 is better for Sunder, if you use the wind build you'll want the HM skill for that.
The dps difference is pretty large on single target. The same is true for wind and aoe, it's WAY better than lightning at aoe.