Couple things to think about... one of the things that your conditions are set up for is MOLD!!!! The seedlings need air circulation or they aren't going to grow right and will eventually just flop over dead.
They could use a bit more light too.
And roots not popping out the bottom... if the rockwool is too wet they don't really NEED to go all root-growin'-crazy, they have all the water they can use right in the cube!
For more females, go with a cool-white light. And lots of it!!!!