actually bloodmane set is a cold/bleed hybrid set focusing on blade spirits and autoattacks. I was thinking about making something like this but adapted for reaver instead of veilwalker Veilwalker, Level 100 (GD 1.3.0.0) - Grim Dawn Build Calculator by @RxJunkie however it seems like the set does not work as intended for blade spirits Blade spirit modifiers of Awakened Bloodmane only work on Blade Eruption so I postponed that idea until devolopers comment on / fix this. EDIT: will be fixed in next patch 1.3.0.7
Here someone just posted a reaver build centerer around the bloodmane set Blade Spirit Reaver
in order to push the playstyle of autoattack + onslaught stacked ring of steel, I suggest you look in the thread linked to in the beginning of the guide, i.e. Korba set builds. I might go down a similar road with this char, and just start a new reaver for a Bloodmane set focused build 
Bloodmane set could work as small upgrade and thus as a placeholder until you have the korba set, it grants some nice global bonuses like attack speed, skillpoints and physical resistances.