You really should not have more than one plant in a pot. They're gonna start competing for space. Not only that, when it comes time for harvest, if you have two different strains in one pot, you may need to harvest one before the other.
I can't tell how big your pots are, but you'll probably need to transplant soon.
Don't forget they basically double in size once you flip to flower, watch how much height you have in your room. With different strains, its gonna be tricky because some are going to stretch more than others.
My 2cents. Looks good.