250g lactose @10 min. 1dl freeze dried coffee and vanilla powder at flame out
Based on boiling 26.70 gallonsliters at 1.086 for 90 minutes, this will decrease your wort by 1.50 gallonsliters, bringing your after boil OG to 1.091. You were planning on an OG of 1.091 so you are right on track. Nice job!