i second headshake on the bio bizz line its all i've ever used.
its IS all organic but i dont use the topmaxx
i use budswel instead its not certified but its been around forever and works wonders. also to save headaches you should use distilled or ro water, in which case you'll need cal-mag plus to take car of all you trace nutes.
i usually use a few other additives like nitrozime but you should do fine without it. i mix them similar to gh's flora line feeding schedule. keep in mind that not all strains like the same levels of nutes at certain times.if you decide to go with biobizz, i'd be happy to post my feeding schedule.
thats just my 2 cents. good luck!