6.95 inches of water in mash tun (5.99 gals) Protien rest at 120F for 30 mins (strike temp 125.9F) Mash at 151 for 90 minutes (striek Temp 160.3F)
Based on boiling 6.40 gallonsliters at 1.055 for 60 minutes, this will decrease your wort by 1.00 gallonsliters, bringing your after boil OG to 1.064. You wanted an OG of 1.065. It looks like it will be under.