Looking good. Did you get the langbeinite? You’ll want that since it’s your source of K.
Also, since your pH was 7 on the nose, you’ll want the crustacean meal to round out the nute profile (it contains N, P, and Calcium Carbonate to buffer the acidity). And, because crustaceans are basically bugs of the sea, it adds chitin which creates a hormonal pest defense response in the plants since chitin is what bug exoskeletons are made of. One of the enzymes in malted barley is chitinase, and it breaks down the chitin from the crustacean shells.
With those two additional amendments to round out your soil profile, you should be fine using water only the whole way from seed to harvest. Just make sure to keep the soil slightly moist (I see recommendations of no more than 5-10% of the pot size in the volume of water you give them per watering), don’t let it dry out completely (except maybe slightly drier in early flower, like days 0F to 21F, for plant steering) and transplant before the plants start to yellow. My progression is usually around 3-4wks from seed or rooted clone in solo cups, 2-3wks in 1/2gallon, and then 2-3wks in 7gal before flipping.
Also, you’re going to get gnats from some of those ingredients, usually the compost and/or EWC. It’s just a fact of life in organics. Buy gnatrol from www.organicbti.com - I got 1/2lb and it lasted almost 2 years because I only use it at transplant. I recently bought a full pound of it and I expect that to last quite awhile.
And don’t slack on your organic bug spray DIY recipe - once a week, top to bottom of the plants, tops and undersides of the leaves, religiously, and you’ll never have bad pest issues unless you get dirty clones or work in an infested area all day and come home to snuggle your plants without changing clothes and taking a shower. Just do the bug spray with lights raised up and turned off until the plants dry out.
Break a leg! I hope the whole thing does really well for you. There’s a learning curve, but it’s not too bad. Once you feel comfortable with organic soil, you can upgrade to SIPs for perfect, no hassle, no thought watering that rivals hydro for speed of plant growth, but with all the benefits of organics.