Overnight mash. Using dry lager yeast S-23 and will ferment in chamber at 68* 9.20.17 x'fer to 2nd 1.006 kegged 9.29 5.38 abv
Based on boiling 8.00 gallonsliters at 1.034 for 60 minutes, this will decrease your wort by 1.00 gallonsliters, bringing your after boil OG to 1.038. You wanted an OG of 1.047. It looks like it will be under.