90 min mash/boil Salts Gypsum Calc Chloride Epsom 7.7 1.1 2.8 14 2.0 5.1 subbed columbus for magnum and cascade for amarillo
Based on boiling 15.40 gallonsliters at 1.042 for 90 minutes, this will decrease your wort by 3.00 gallonsliters, bringing your after boil OG to 1.050. You wanted an OG of 1.054. It looks like it will be under.