I should have warmed up the mash tun with a couple gallons of hot water (eg 180), and also make sure grains are warmed up to room temperature.
Based on boiling 7.20 gallonsliters at 1.039 for 60 minutes, this will decrease your wort by 1.00 gallonsliters, bringing your after boil OG to 1.044. You wanted an OG of 1.063. It looks like it will be under.