With all those hop additions you're likely decently over 100 IBU, which you may find to be a little much depending on what you're going for. Personally, I prefer Citra in later additions. So, my $.02 would be to ditch the 20 and 15 min additions and keep the rest. Use the Columbus or Warrior for your bittering, then blast 10, 5, and 1 and dry hop with your citra.
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