Organic base soil mix

I'm thinking of doing a 25% Peat, 25% Perlite, 25% EWC and 25% Composted Cow Manure mix. I'll be amending this mix after. Anyone used Composted cow manure in their mix?

I went ahead and mixed it up. The cow manure doesn't smell one bit so it's definitely fully composted. Now to mix in all of the amendments!

I have four or six bags in my supersoil this year