your cal mag and molasses may add some nitrogen, do you need calcium at this point?
as for breeder estimates most agree to take them with a grain of salt, they are usually exaggerated to sell seeds. The breeder does not know your environment or grow style to be able to accurately predict when the plant will finish. Not everyone agrees but a little trick I have found that will get you closer to the breeders estimate is, if 60 days have passed since you started 12/12 lighting you are really around day 40-46 flower. The first two-three weeks would be preflower/budding/stretch growth stage which occurs when you first initiate 12/12. It's not quite flower and not quite veg.. Once stretch slows/stops and buds are formed, you enter the true flower period"
as for trichs, some growers use them but really you want the full picture, pistils, trichs, flowers. Until your pistils all change color and recede it's usually pointless to check trichs.. Once you notice your pistils have changed and receded, while flowers are plumping up is when I would check the trichs if I was going to. At that point you know you have a ripe plant and it's a matter of choosing when you want to harvest
