So I have finally transplanted one of the girls, Only one, in case it all goes pear shaped and I loose my first crop.
So I watered the plant the day before, filled the larger pot with soil, which I then flushed because of all the pre-nutes. Then I made the hole for the root ball. Picked up the girl, some light taps, she started sliding out, then OH SHITTTTTTT! What a dumb ass, I was stupid enough to put large stones at the bottom of that small pot. Anyway the stones fell away, the ones that where stuck to the root system I left in place.
There is plenty of space for roots to grow out and down now. It's been two days since I transplanted, things are looking good enough.
I will transplant the other one this weekend if no defects appear.