The soil I'm using right now, and for my 1st grow was:
3-Qts. Miracle Grow Cactus Mix (Forest Compost, sand,peat,perlite). Coarser compost.
3-Qt. Miracle Grow Potting Soil (Forest Compost, Peat, Perlite).
2-Qts. Perlite.
1-Qt. Vermiculite.
1-Qt. Organic Peat.
1-tsp. Bone Meal.
1-tsp. Blood Meal.
1-Tbs. Miracle Grow 10-10-10 (slow release) fertilizer.
This mixture fills a 2 1/2 gallon pot (10" dia. x 10" high.
I tested my soil with a dual electronic soil tester from (Ferry-Morse) seed Co. The PH is 6.5. The meter also tests the nutrients in the soil, from Too Little, Ideal and Too Low. I have excellent drainage, and don't have to water for 3-4 days. I germinated White Widow seeds a week ago, one of my girls' is 6" tall already, the other 3 are 5" tall. (nice and bushy). You have a recipe that sounds cool too, and I'm making changes in my mixture next time around, to drop the 10-10-10 slow release fertilizer, and go with the bat guano and the worm castings. Not sure about the dolomite yet, because it adds alkalinity (so does the peat) to the soil. I'll test the soil after I mix it and if I need the lime I'll add it then. I can't get pics right now because my main computers down and I need to re-format my hard drive. I'll need some MJ to get me thru that.