I am running Buddha Tahoe, several White fire cuts, Scott's OG, and some other kinda-finicky cuts. I have found that VermiSoil and VermiFire are the best soil-based mediums I have tried. I usually put the hot stuff on the bottom, a la SubCool, and I have found that AgeOld Dry Fruit is a quick substitute for rounding up all those amendments, without a huge difference. I still "cook" the soil I mix it in for about 30 days. Adding AO Root Rally really kicks it in. I feel that most OG cuts love their calcium and magnesium and are very particular about nitrogen. The Dry Fruit is 2-10-20, so it doesn't produce the nitrogen claw in finicky strains like some dry fertilizers. Another shortcut booster I use for OGs is the Roots Uprising Foundation. It provides a nice mineral boost.
GO EASY on the kelp. With all its auxins and cytokinins, it can cause your OG to uptake a little too much; biting off more than it can chew, if you will. I try to supplement just enough kelp to provide trace nutrients.
Hope this helps.