Personally I'd drop a little Defence for some more Shield. Also as I mentioned, I don't like the Absorb proc relics so I'd swap that for an activation Relic.
Remember that spec will give you 3% Defence from Riposte so you've actually got 33%.
so i swapped all the def augments with shield augments i end up with
Defense Chance 27.40% with riposte ill be at 30% def
Shield Chance 55.04%
Shield Absorption 50.74%
is that right ?