A: wrong forum, you want Basic Growing

B: You can't sex a plant until they have begun flowering, and yes, any cuttings taken from a mother plant will retain the same gentics as the mother and grow females.

C: ditch the halogen, sunlight from a window is better than the super narrow light spectrum coming from that bulb. Get a Metal Halide or High Pressure Sodium light if you're serious about taking it to the end.

Peace