soil First Time Mixing My Own Soil

[Helldozer]

First year mixing my own stuff, and Millworkman has helped me out a lot. I love that it is very basic. Here is what I'm going to be using:
 
2 bags x Thermorock Perlite 2 cu. ft. (use about 1 3/4 of a bag)
5 bags x Chicken Manure 1 cu. ft.
9 bags x Steer Manure 1 cu. ft.
5 bales/bags x Fafard Peat Moss 3 cu. ft.
 
I'm estimating this to be the following ratios...
 
5 Parts Old Miracle Grow MG Soil
3 Parts Peat Moss
.7 Parts Perlite
1.5 Parts Steer Manure
1 Parts Chicken Manure
 
This should make, approximately 275 gallons, and I will mix this with about 145 gallons of 2 year old Miracle Grow Moisture Control. I'm pretty excited to see how my plants do with this compared to the MG.
 
I'm posting this to make sure I have my ratios correct, and to see what your opinions on this were. I'd like to not add anything else, but if needed I will adjust my ratios.
 
Thanks!

 

[Helldozer]

If anyone has any suggestions or comments it would be greatly appreciated.  Thanks all.

 

[juanitos]

You might want something to help drainage with all that manure, peat, and old potting soil.
Bark chips, lava rocks, something like that to separate out all the fine particles.

 

[Proud Marine Dad]

Is this for containers?

 

[Helldozer]

Thanks OKGrowin, appreciate the suggestion. 
 
Yes, this is for containers.