Infraction: 6. Do not post unless you have something new and worthwhile to say.
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Test, don't guess.
I've found a better optimized Frost DW Pre-hardmode gear. Here it is: chardev 8 - Cataclysm Beta
I haven't tested it out on Kahorie yet, but following your stat values and considering the lower hit/exp after the cap and the more mastery from the gear than the one mentioned in the guide, it should deal more dps.