i would have a heavier Pottsium end for flower.... And not so much Phos. I usually stick to the 123 formula`s.... ie: N10 P15 K20 for flower... the oppisite for veg ie: N15 .P10 K5
9 days of flower is fine for feed - use 1/2 recommended (if you have not been useing nutes) and work your way up to full dose....