I don't know what this guys talking about i've always needed to adjust PH when using Ocean forest. as far as when to begin your nutrient schedule, start when you notice the first deficiencies showing up, usually the first one will be a nitrogen deficiency (yellowing of leaves towards the bottom of the plant).
I've noticed in ocean forest soil you can leave a new clone in a 3 gallon container for about 2-3 weeks depending on the strain. When I used FF nutes I didn't mess around with anything but the main 3 (grow big/tiger bloom/big bloom) and I got some nice results. I've since moved onto organic living soil so im gonna see how that works out..
Also check out smart pots great for air pruning your roots so your plant doesn't become root bound.