I'm doing an irish coffee milk stout and i am looking for some general feedback. Heres the info, 5 gallon batch, BIAB, 90 min boil. I had a SG of 1.040 before the boil and lactose, after i added the lactose it was 1.048. I had ~8gallons for the boil, boil went well and ended up with ~5.5gallons...