Need some serious advice!!! about a month in!!PICTURES

I have 2 plants about 4 weeks in and im still not sure weather there female or male..! Also i need some advice on which light spectrum i need for the best harvest!!!! here are some picsss. It grew so much over the christmas breakk. almost doubled in size.!

they will show sex about two weeks after you put them in flowering, are you useng CFL's or a Mh/HPS?

right now im using 125 watt Eco grow FL Pulp 24 hours day.. im not sure on the type of pulp i needd..

Should go with hps for flower go with what you can afford to buy/run