If you use tap water, I would give half-dosage of CalMag, once a week. If on filtered or bottled water, one regular dose per week.
Regarding the Fox Farms schedule...in veg I follow it to a tee, in flower I use regular strength Tiger Bloom, half-strength Big Bloom, and after a month of flower...I start adding the Cha Ching (lower dose) and molasses to the regimin.

IMHO, Open Sesame isnt really necessary, but I'd like to try the Beastie Bloomz sometime. (fixed income prevents this)