Dancing gorillas under 315CMH

Hi everyone, this is my first diary here. I have 4x fem gorillas (3 clones, 1 seed) and 1x danceworld from clone. At first they were sitting in veg tent under 125cfl and secret jardin led T5 looking lamp. (Approx 150w altogether) I chose it deliberately instead of going full 250. They were sitting in small 3l pots for almost 6 weeks, 9day ago I transplanted all ladies to 15l smartpots and one 10l airpot (danceworld) moved them to flower room under Lumatek 315w CMH. They were trained throughout whole veg. My question is, when should I flip for flower ? I know I waited too long in veg in small pots and wouldn’t want to end up with low yields. Any ideas ? I’ve raised my light so they could stretch a bit but that CMH light does pretty good job and keeps them very nice and bulky