Oh, and move those lights closer! Put one bulb directly over one cup and same with the other.
What you can do with the 3 in the cup is once they get their 1st set of 'real' fan leaves, flower them*on a 12/12 light schedual) to check the sex. I would chop down at soil level(Don't pull up or you can mess all the plants up) all but 1 female. Even if you have 3 females, pick one and kill the rest. IMO your best route. and after that you can transplant.