^- What she asked.
If you're doing the PvM route, I'd recommend pure HV. If PvP, pure HP would probably be a better idea (I wouldn't know more outside of this as I don't PvP).
As for the pure HP idea for the PvM route, it's not really a bad choice as HP is one of the factors to Siren Song's strength. But as you have Volley Kick and Two-Hit Combo, you'll probably want HV to bolster those. For equips, you'll probably want to balance HV and AP.