Pre-boil water for 10 min to remove some hardness. Pre-heat mash tun with 168 f water and mash in when temp drops to strike temp.
Based on boiling 8.00 gallonsliters at 1.036 for 60 minutes, this will decrease your wort by 1.50 gallonsliters, bringing your after boil OG to 1.043. You wanted an OG of 1.060. It looks like it will be under.