used 1.5 oz centennial at 45 minutes and another 1.5 oz at 25 minutes. Only 3 oz used for dry hopping
Based on boiling 7.00 gallonsliters at 1.066 for 75 minutes, this will decrease your wort by 1.25 gallonsliters, bringing your after boil OG to 1.078. You wanted an OG of 1.081. It looks like it will be under.