I thought it sounded pretty good so I had wondered if anyone else has tried this before or have a similar mix.
30% good top soil
10% composted manure
50% compost or peat blended compost
10% drainage rocks (Can be sand, perlite, gravel, expanded clay pellets etc)
I will try it out later this year as my coco supplier has gone out of business and getting the really chunky pieces (2 inch) seems to be harder to find plus I hate washing it. I plan on using the expanded clay pellets because they are lighter than sand or rocks of course and they won't float up like perlite.