At the last case swap, for the Westy12 clone, we got ~70% overall efficiency with~460L out of the kettle into cubes.
I just entered the recipe into a modified version of ianh's spreadsheet using 70% efficiency, target volume 500L, OG=1.079, FG=1.018 (yeast attenuation 75%), 44.9IBUs:
180kg grain total.
126kg MO
18kg Amber
7.2kg each of Brown, Choc, and Wheat (so totally should be oats)
5.4kg Light Crystal (60 EBC)
3.6kg each of Roasted Barley & Chocolate wheat
1.8kg CaraAroma
300g Columbus + 150g EKG @FWH
250g EKG @20mins (calc'd as @40mins for cubes)
500g Chinook + 375g EKG into cubes (equivalent of 20g Chinook & 15g EKG into each cube)
dry hop as desired.
(i'd guesstimate 500-550L Mash, 300L Sparge (should get us ~500-550L into the kettle. Could definitely increase sparge to 400L to improve efficiency though)
---------------------------------
How's that look? Seem a reasonable estimate of your recipe, Mofox?
If that's roughly OK, it gives us some grain (& hops) figures to start acquisitions.
PS: could round the MO to 125kg, and add 1kg of Melanoiden (maaaaalllttyy!!), or bump up the Amber to 19kg.