I would suggest building your nute bank now, as soon as you get your EWC and compost.
Mound it up in the center, leaving it clear around your girl. Lay the EWC out first, cover with a good layer of compost, add your Craft Blend and you can add a little of the Gnarly Barley, grind it up if it's not ground(make your own next time. It's just malted/sprouted barley) add another layer of compost. Water with the RootWise and I'd do Recharge at the same time(biodiversity) and bring up the moisture level in the mound....not soaking wet. Take a look at that first page to get an idea.
When you water your girl, add water on the wicking areas. It will help in getting that relationship established.
I cut BIG X in my cover and put the cover on. I do that at the very beginning to keep up the moisture levels of the media AND the nute mound. The nute mound needs the moisture for the 'bugs' to work their magic on it.
Ya have a couple of BAS products I can't really advise you on using, since I've never used them. Bio-phos and big 6. I assume they are mainly for flower. Other than that, I don't see any top dress for flower. Ive used BAS Build-A-Flower, but it's a bit pricy. I have Roots Organic top dressings for flower and one for terps. I also have BAS Blue Gold Flower, but it's sorta reserved for a quick fix for a flowering def. It's a liquid, so you have to apply it carefully to prevent nutes from flushing into your rez. I've used it a couple ways. Just plain sprayed of top after your short dry period......dry periods are a must. Don't keep your rez filled! And I've also taken my compost and made a wet slurry with the Blue Gold. It's something I have on hand for unexpected heavy flower feeders.
While not a 'live' product like you'd get from someone rowing worms, it is a very good product and nice;y priced.
Earthworm Castings Plant Food is an all organic soil amendment ideal for growers. Derived from earthworms, earthworm castings act as perhaps the best soil enricher on earth. Adding in small amounts of
www.homedepot.com
Hope this helps. Look at my last thread for more info.