Organic Soil help

I'm going to be planting into 5 gallon buckets which are 19 liters a piece. So I'm trying to figure out the proper ratio of soil and amendments to fill these buckets.

I have:
MG organic choice
Sphagnum peat moss
Organic humus
Dehydrated cow manure
Perlite

This is the mix I have in mind:
4L-MG
4L-Peat
4L-humus
2L-manure
6L-perlite

This makes 20L which will fill a 5 gallon bucket perfect after the soil has been drenched and compacted.

Does anyone have any input, too much mush in the mix? too much manure? The humus is very thick so I might use less but its all up in the air. +rep for input!

thought i would put up the soil i use...someone might benifit

1 part ocean forrest
1 part pearlite
1 part coco coir
1 part worm castings
1 part mushroom compost

for each 10 gallons i add 5 cups composted cow manure,,6 Tsp blood meal,,2 Tsp mex bat guano,,8 Tsp granular dolomite lime,,6 Tsp bone meal,,10 heaping Tsp POM 5-5-5,,8 Tsp greensand,,10 Tsp kelp meal,,2 Tsp glacial rock dust...mixed good,,watered,,cooked for 1 month

germ/seedling mix
2 parts ocean forrest
1 part pearlite
1 part worm castings
1 part coco coir

hope this helps someone...it serves me well...w99

Unless the miracle grow has a lot of lime in it you might want to add a little lime. Like a quarter cup or something. The peat moss will break down and your acidic ferts will lower the PH. If it does just PH your watering. Use lots of perlite. Maybe some coir too. I used bad soil for one plant and good for the other two and was surprised by the high clay content. Coir and perlite fix that. Greensand is good too.