Yeah... And along with the higher PPM you also have to lower it at the end of feeding... If you know what a "bell curve" is, that's exactly what you wanna do... Start light, peak in the middle of flowering, and taper off at the end.
From seed it took two months to have 60 clones, so since you're starting at clone, then it should take a little less time.
VHO will help the mothers grow faster, but it will also make her stretch.
And the Fox Farm line is working well for me, I grew with Advanced Nutes for 7 years, decided to give the other companies a chance, so far I've got no problems.