I personally only have experience with General Hydroponics Flora 3 part for my base nutes, and can tell you it definitely works. I'm a little torn on the fact of the value for the price, but didn't want to change what was working. Alot of the big names have similar systems, and I'm sure the Fox Farms nutes work just fine as well. I've done some research trying to find what is "best" because quality was always a concern to me over price, and never found any consistent info. The worst I've heard about GH is that it works at least as well as what might be a cheaper competitor in some cases, but never anything negative regarging quality. If price became an issue I would possibly stick with GH and use their dry 2 part formula.
**I mised the part where you said you wanted to go organic, GH does offer an organic formula as well, but like I said anything popular will probably work just fine.
In regards to the Fox Farms Ocean Forest; I used to use that for my clone transplanting, but recently ditched it because it was way too hot for my young plants. They would take weeks to start growing I'm assuming because of nute burn. Maybe my strains are just more sensitive to nutes, but people I have talked to about it were not surprised at all. I switched to Pro-mix seed starter, which was less than half the price and comes in smaller bags, so I don't have to buy the big bails when I only need a small amount. I add alot of extra perlite, maybe about 20%. I don't think the Ocean Forest is bad, it probably would even be decent to mix with something like the Seed starter, or the Fox farm version i think its called Light warrior. Technically Ocean Forest comes with 30 days of nutes inside i think. The Pro-mix seed starter says no nutes for 7 days on the package, so its definitely much lighter if it has any. I personally would prefer to start with a base of no nutes, so I can regulate and know exactly what it is my plants are eating.