I've been searching the same path as you, L3G10N. I've googled the crap out of "organic soil recipe", etc. and saved a bunch of different recipes, techniques, advice, etcetera to my Favorites folder. I use these resources to generate ideas for developing my own organic soil mix.

Here's a few of those links I found to be helpful:

http://www.onlinepot.org/grow/goodsoil.htm
http://icmag.com/ic/showthread.php?p=510571#post510571
http://www.jasons-indoor-guide-to-or...oil-mixes.html
http://www.drugs-forum.com/growfaq/G...c%20Topics.htm

Regarding the materials you have available, I would go with the following rough mix:
3 parts compost (cow/mush mix)
2 parts peat
3 parts drainage (50/50 perlite-vermiculite mix)

Then add bone meal, lime, blood meal...whatever else you want, using a per gallon ratio. Alot of the recipes call for amendments per cubic foot. 1 cubic foot = 6.4 gallons and 1 cup = 15 tbsp, so.... one of the better-looking recipes calls for:

1 cup/cu ft for bone and blood meal (about 2 tbsp/gal soil)
1.5 cup/cu ft for lime (about 3 tbsp/gal soil)

You might want to add some kelp meal (2 tbsp/gal) and/or a bit of wood ash for micronutes and trace elements.

I personally am adding kelp meal, wood ash, dry molasses and mycorrhizae fungus to my mix and plan to give supplemental feedings of manure/guano tea during veg and flower.

The more peat(acidic) the more lime you want to help stabilize pH. With the recipe above (25% peat) you may only want 1-1/2 to 2 tbsp/gal soil.

That's just one of a hundred examples off the top of my head. A basic soil mix like that plus regular feedings of manure/high N guano tea during veg and high P guano tea during first half of flower should do your babies righteously.

I'm anxious to try my all-organic SecretSquirrel SoilMix (see thread) on this next grow. I too used a prefert soil on my last grow and ended up with pH and nute levels all over the place. Got close to 2 ozs of nice sticky power plant bud off one plant but I feel I could have improved that immensely with a good organic soil mix to start with.

Hope this gives you some constructive ideas!

SecretSquirrel