Hempy Grow Buckets and Jacks Classic Nutrients Questions?

Hey guys so I have a quick question about hempy grow buckets and jack classics and other grow nutrients? Would it be a good Idea if growing in a hempy mix (3:1 perlite to vermiculite) when I feed in veg (I will be feeding Jacks classics hydrangea fertilizer blue 7-3-3) would it be good to add in cal mag plus so the plants still get in calcium in the veg stage and other nutrients like that so they don't get nutrient deficiencies or does the hydrangea nutrient have me pretty much covered?

In flower I will be using Jacks classic blossom fertilizer 10-30-30 and all purpose fertilizer 20-20-20.... Now I am a little confused on these nutrients here and there feeding schedules in flower? Do I need to start out in flower with blossom fertilizer or the all purpose fertilizer?

Thanks!!!

never tried jacks before but i like continuing to use grow nutes for the first 2 weeks of 12/12. this is when they stretch and grow quite rapidly. once the stretch is over, i switch to bloom nutes. i think the 1-3-3 is better than 1-1-1 for bloom in my opinion.