You got some good advice to start there. Now about the nutes I would HIGHLY encourage you to get B.C Grow "Recipe for Success" kit. $20 and has everything you need for your small grow.

Get a PH meter if you can afford it. I'd go with the HM Digital PH 200. Otherwise get the PH liquid test kit from GH for $7. Much better than strips.

Finally, go ahead and flower until they are one third to MAX one half the height you have to play with total After accounting for your min light height.