So first BIAB is in the books. Hit all my volume numbers per Beersmith2 predictions, but missed my gravity by a few points both after Mash and after boil. BS2 predicted 1.053 after Mash and 1.070 final. I ended up with 1.047 and 1.060 final.
I did a second mill off of NB pre-milled grains, didn't go all the way to powder consistency as I read it can make the beer a little gritty. I also let the grains drain twice and poured that in. My saccharification was 60min, and then 17min mashout. I used BS2 timers, but probably should have gone 90min as I have read high OG beers benefit more. All in all I'm please I was able to get 76% Mash Eff, and 67.8% Brewhouse Eff.