Followed Recipe except not dry hopping for 21 days. Will dry hop for 7 days. Dry Hopped on day 7 following brew day when fermentation was complete.
Based on boiling 11.00 gallonsliters at 1.055 for 90 minutes, this will decrease your wort by 1.50 gallonsliters, bringing your after boil OG to 1.063. You wanted an OG of 1.075. It looks like it will be under.