Pre boil brix 13 Pre boil gravty 1.050 Post boil brix 17 Post boil gravty 1.065
Based on boiling 7.00 gallonsliters at 1.050 for 60 minutes, this will decrease your wort by 1.00 gallonsliters, bringing your after boil OG to 1.057. You wanted an OG of 1.068. It looks like it will be under.