HBB in fancy new still

[MtRainier]

I did my alcohol cleaning run in my new jacketed still described here: viewtopic.php?f=50&t=74198

Now I'm going to do approximately a triple batch of HBB in it for a total volume of 20 gallons since the still is 26.

• 20 lbs of corn meal
  2 lbs of honey malt
  4 lbs of pale malt
  4 lbs of red wheat malt
  4 lbs of white wheat malt

Here's the plan:

• - heat 11 gallons of water to boil
  - turn on agitator
  - slowly stir in corn meal and honey malt
  - keep heating until temp is 204F
  - add alpha enzyme 20ml (1.6ml/gal)
  - occasional stir for 100 minutes with occasional heat to keep it around 200F
  - add 6 gallons of cold water
  - stir and circulate cold in jacket if needed to get to 140F
  - adjust mash ph to 4.5 using citric acid
  - add pale malt and wheat malts
  - add gluco enzyme 14ml (0.8ml/gal)
  - stir for 30 minutes, no heat
  - cool jacket while stirring to 86F and pitch yeast and oyster shells
  - ferment in the still about a week
  - strip it

What I'm having trouble calculating is the expected OG and eventual ABV. I have Beersmith, but it doesn't handle cornmeal well.

I'll be 2lbs of grain per gallon. My guess is around 1.050 OG and ABV around 6% assuming a good ferment. Seem reasonable?