organic mix for white widow greenhouse plant

going to add one organic plant to my greenhouse grow and want some imput with my mix (white widow)
using 1/4 coco
1/4 chunky perlite
1/4 earth worm castings (walmart 3.50$ 10#)
1/4 homeade sifted compost
am going to be using my used tropical fish water and adding some organic nutes from the hydro store
any opinions about what organic fert is the best??????
only adding alittle bit to complete the micro nutes so i dont leave any out
getting a quart of grow and one of bloom

I use Botanicare pure Blend Pro---bloom (for Flowering)
Use Metanaturals for growth (cheaper but their bloom formula contains too much N)
Too add more P duing last stages of folwereing I make a Tea from high P bat guano and add the Botanicare to it. I also top dress, but that's another story and never in the last six weeks of flower
Last half of flowering I add ever an increacing amout of Molasses (from a few drops per gallon to about a teaspoon, some go alot more).
I live in a one bedroom apt. If I lived somewher with space, I would deffinitly be diong my own tea (I do some now, it gets messy in a small space, quick).
Gosh, Earthworm casting at wallmart, I hate wallmart but got no problem with Earthworms. You have a good base for tea right there.
Dolomite lime is a growers friend. ( a little goes a long way)