Nice mix dude, i know little about sunshine mix although it seems a good base soil with which to add amendments.
I make a small soil mix, not the best but better than anyone single soil round here in the UK, basically westlands seedling or all-purpose depending on seed or veg and flower. To this i add Canna Terra organic soil and mix with lime, perlite and vermiculite. It all starts off a little hot unfortunatly but my plants adapt quickly so its not too bad. I need a lighter soil to mix with the Canna but as yet havent found one i like. Canna Terra ppm is 1200ppm at max so yes i need to dilute it a bit, why do some soil manufactures think hot soils grow better plants is beyond me but they seem to pump them full of Nitrogen and other nutes to the max.
I use maxicrop seaweed, biobizz grow, bloom and fish mix with sensi cal/mag and fulvic acid along with benificial funghi and bacteria at first transplant to seedling pot from jiffy cube.
I keep the Canna mix cause the Canna is like worm castings, guano etc etc and provides me with a good start to the soil microbes and organic grow methods, alas my fulvic and sensi as well as my westlands soil is not organic so i can not say i use 100% organic. Looking to get into brewing my own teas soon too but all in good time. Glad you pointed out that some soils are so hot. I want to add like 10% of my old soil to new transplants so i can kick start the mycos funghi and soil organisms but that also is a future consideration.
Anyway a very good grow, i love the organic and tea approach, i have a long way to go before im totally organic like you. Peace