I agree with dropping th e biscuit malt, and flipping the ratio of 2 row to wheat. You don't need a 90 minute mash; 60min will do fine, as will a 60min boil. I would also add a half pound of rice hulls to prevent a stuck sparge.
Scrub the bejeezus out of your limes, the sanitize them and what I hope will be a microplane zester. You should have no issues with infection.
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