Added peppermint powder in last 5 min of boil, Gravity down to 1.021 on day 5, 4gal bottled at 5.12%
Based on boiling 7.00 gallonsliters at 1.051 for 120 minutes, this will decrease your wort by 2.00 gallonsliters, bringing your after boil OG to 1.066. You wanted an OG of 1.072. It looks like it will be under.