Ferment 68 start - 66 degrees For 7 days. 8 days later still fermenting @ 66 degrees hydrometer reading @ 1.021 6 days later @ 1.010 (14 total) keg.
Based on boiling 12.00 gallonsliters at 1.054 for 60 minutes, this will decrease your wort by 1.00 gallonsliters, bringing your after boil OG to 1.058. You wanted an OG of 1.055. It looks like it will be over.