single stage starter - 6 cups water 1.5 cups pilsner light DME Water Prep - 6 gallons distilled, 2.5 gallons tap, Camden & chlorine prep 158/153 in mash tun
Based on boiling 6.70 gallonsliters at 1.038 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 1.047. It looks like it will be under.