new grower

Hi guys. im going to give soom info on my grow. first time but long time in the hort business. 4' by 4' space with up to 50 inches but would like smaller bushy plants. 3 shop lights on the sides and a 400 watt mh that can go hps for the flower. average plant is 14'' and 7 out of 19 have alternating nodes. they all look great and have fan leaves bigger than your hand. they all have been topped and have double coalas. would you flower now or wait for the rest to produce alternating nodes. after topping they became very bushy on the inside. is this good. ferts are 24-6-18 for veg and 15-30-15 for flower. i have been carefull not to over nute using 1/4 amounts. I also have 18 new plants in the room that are 2 weeks old about 7'' tall and would like to flower them as well just to pick out the best 15 - 17 females. would you guys with more time growing this plant veg more or flower till 70% of the hairs have turned amber. will the little plant produce some decent bud. thanks for all your help. Im am still new and pics scare me is it safe for sure

if you have hairs already you can start flowering. The hairs shouldn't turn amber (or any darker shade) until it has matured in the FLOWERING stage. not the veg stage