For an example of remineralization, only 200lbs/acre is all that's needed with kelp meal.
If you've ever applied stuff by the acre you would see just how small of an amount that is.
Sorry if I read that wrong. 12 cups for 16cf is pretty spot on. 4cups/cf isn't.
I got bitchy because over the last few years kelp meal (in recipes) has gone from 1/2cup/cf to 1cup/cf, to 2 or more. This (the 2 cups+) was touted by several who upon close questioning revealed they had never either made an organic soil, or only did it once. But were spouting off like they had done it for years.
Your mix looks good, but you are WAY over paying. Around here:
4cf of peat moss (30 gal +-) $9.00
4cf perlite $19.00
40lb bag of dolomite $4.00
Alfalfa meal $15.00/50lb bag
granite dust $5.00/5 gal bucket ~70lbs+-
EWC mostly free, I have 2 bins, 3 years old
biochar comes from the bottom of the lump charcoal I use in my smoker. Sometimes called cowboy charcoal. $5-$7/bag. Call it biochar and the price jumps, but there is no real world difference.
The fish meal, crab meal and the like is good stuff, but since I can't source it locally I don't bother. There are other things that work just as well at a fraction of the cost.
Wet