I just got back into homebrewing after 15 years off and have a fermentation question. I just started an oak barrel stout, extract with steeping grains (OG=1.060) that will require a secondary fermentation to add oak cubes and vanilla beans. How long should I leave it in the primary, until it hits the FG=1.017 number? Then how long should it stay in the secondary, on the oak cubes and vanilla? The recipe did not say. Thanks!