Beyond the fox farm I wouldn't be able to help, so my advice would be do they look healthy, happy, and growing well? If yes then "keep on Trucking" to me it seems you've got a good grasp on your mix and it sound logical. The way I use Molasses is one dose somewere in week 7-8 when my buds are fatting up, producing trichomes, but not so later that they are ripe. I dissolve a teaspoon or two per gallon of plain ph water and let it sit overnight to dissolve fully then feed that water on my water only day. I know some peeps use it a lot more and opinions will vary, that's just the way I use it. Looking good Deadhead.