Overshot mash temp at 157. Left in primary in house at 68 degrees for seven days. Added zest and dry hops at day seven.
Based on boiling 6.70 gallonsliters at 1.057 for 60 minutes, this will decrease your wort by 1.00 gallonsliters, bringing your after boil OG to 1.066. You wanted an OG of 1.067. It looks like it will be under.