You can't get plants to flower "quickly". All strains have their own flowering process and timing. Anyone who tells you that lights or otherwise will speed up flowering is either inexperienced or completely lying.
As far as nutes go, you want something higher in P and K and typically less in N.
I've been trying Iguana Juice organic from Advanced Nutrients, but it doesn't sit well with my automatic drippers, so I'm going back to my local hydro shop's 3-part nute solution. One bottle for veg, one for bloom, and one you use as a mix in both.
-spek
ps. Welcome here to RIU
We'd love to see some pics of your grow.