Actually, when I saw your concept (with items), I noticed 3 things at the start:
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there are a number of conversions, aether->cold has~ 75%, some pierce->cold 50%?, some vit->cold, and some fire->cold. This made me curious to if you might target Bat, Aetherfire(drain essence), and blizzard. And of course, Rumor.
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Your OA and DA are too low, but grabbing Watcher devotion could help and a few other OA devs like 4 points into Dead god could assist (because you will probably end up blue-heavy with enough red anyways). And while you are deep in blue/red, also grab the entire revenant for RR. Some points in Cunning combined with %cunning skill from Nightblade can get OA up there.
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I think you could get up around 3k OA and 2.7-ish DA (with all the -OA to monster buffs = ~3k).
So pretty much all the same gear/concept could work except you will probably need different pants and a different Relic (Serenity?). Edit: and some changes to components and augments.