I wouldn't worry about not having floranova grow. Ffof has enough nutrients to get you to bloom usually. Might need to add some cal mag though starting around w4 of veg if you go that far. You can use floranova bloom for the entire grow if you want too, I've done it in a hydro set up and it worked well, look up the Lucas formula and there's a calculator that will tell you roughly how much of everything you need, you can plug in different nutes to see how to mix with different brands too. The formula isn't perfect but it will work, every strain has it's own particular needs and until you get your girls dialed in its a good guideline. Just pay attention to what looks deficient or when you're burning your plants and make minor adjustments.
Also since you're growing in ffof and not adding nutes for a while I'd suggest making a compost tea if you have the space for a 5 falling bucket and a aquarium air pump. There's a thread somewhere on the forums by a member named Heisenberg that gives a recipe for a very cheap and effective tea. Not only will the tea free up nutrients from the organics in your soil for your girls to eat but it'll help out with all the nasty little soilborne pests and given you have the right microbes will also promote root growth. I would at the very least do this in veg since you're not using synthetic salts as nutrients.
