Some parts of the leaves have a light green discol...

Nothing wrong here. Your feed can start to go up a little over the next week or so. But keep it light. I'd keep the calmag in the bag until you get closer to pre flower. As you want your plant to focus on core NPK to get her off the ground. All you really need at the start is a good base to go off from and you have that. Maybe look into getting some smaller pots to start them off in. As too big a pot too soon can do more harm than good. You want to make a root ball and you'll only get that quickly by uppotting if you aren't going to be using any root stims you gotta work on making stronger roots and in turn they'll return the favour by strong nutrient uptake and so on. Good Luck..