3.9 Kurogami's Blinding Arrow Champ - Critiques Wanted/Welcomed

Hey everyone, thanks for reviewing my build. I humbly submit it to the community in hopes of making it stronger. My focus is to use mobility, taunting by totems, and blind to create enough defense to offset my hp. Then blow stuff up from a safe distance with high crit and pew pew. Let me know what you think!

Kurogami's Blinding Arrow Champ - https://pastebin.com/gK3XxFu3

Offensive Layers: Frenzy + Ballista Totem + Crit + Impale
Defensive Layers: Evasion + Armor + Blind + HP
Debuffs: Blood & Sand + Ensaring Arrow + Maim + Taunt
Buffs: Pride + Dread Banner + (5) Frenzy Charges + Vaal Haste

Pros:
1) High mobility/speed
2) High Crit Rate/Dmg
3) Blind works well with armor/evasion build + it adds crit rate/dmg

Cons:
1) I am worried I don't have enough life/mana steal
2) Maybe Shrapnel Ballista would be more dmg (also better clearing), although 9 piercing arrows from multiple totems should do the trick.
3) My life might be too low for higher red maps, even with insane taunt + blind

Questions I have:
1) Is the damage reported in POB for Shrapnel Ballista per arrow after it explodes or total? Clearly that would be more dmg (maybe) and possibly a better clear speed.
2) Are there better unquies for my build? Im focused on blinding, critting and taunting with my totems.

Please feel free to comment and share your thoughts. Thanks for reading.

bump