This Set, stat wise, is set to function around Counterstance’s weak spots.
Just because it's a defensive set doesn't mean it was designed for counterstance.

Optical hat. 10 evasion. Evade more attacks and take less damage, one of countestances weakpoints.

Ohat certainly wasn't designed for counterstance, lol.

When 75 was the level cap, I soloed Sharks in Sea very comfortably with this set as MNK/DNC - I never had to rest - Though storing TP up when Sharks would use Plasma Charge was a must; since hitting them would usually Stun me and I’d then be unable to Counter, which would let them land a free hit or two. Guard Skill usually would help pick up the slack when that’d happen.
Sharks were never heard and PDT is always the best to use when you're in an oshi moment.

Ohat/Usu > af2 crown
Usu gote > Seiryu Kote > af2 gloves
Usukane > Scorpion Harness (+1) > Melee Cyclas
I personally wouldn't come out of byakko's at 75, but for defensive purposes, Denali > af2 legs
Temple Gaiters+1 > Melee gaiters.

None of relic was good for soloing. Not a single piece of it. There was always something better to go in each slot for every circumstance.