bro..did she turn hermie???? looks male!!? take it out?I can't tell by the pics, but what reflective material are you using?
You could do probably 60 solo cups or one 8 gallon scrog. It's up to you.. The coverage of the 600w is normally 4x4 at best. Seems like 6 plants in 2-3 gallon pots would be legit, but you should rotate them every few days because the sides won't be getting as much light, Any side lighting you can conjure up would probably really help.
Looks good so far though!