I got my Querkle (Purple Urkle x Space Queen) Clones from a dispensary 3 weeks ago today, I am assuming they were already at least a week old when I got them (already had roots poking out the bottom of rockwool) They are short(all between 7-9 inches) but pretty Bushy. Please take a look and let me know if you think they are good to go into flowering.

Space is not really an issue, the closet I have them in is about 8 Ft. They are suposed to stay pretty short, from what I read in their catolog. They are suposed to take about 8 weeks to flower. How much yeild can I expect from them if moved now? They will be going under a 600w HPS by the way.
This is my first grow so any input is a big help. Thanks.