Smokeness,
to answer your question "is 3.5 feet in hight enough for a hps or mh light". Answer: NO
After taking in consideration space for light 6 to 8 inches, pot hight 8 to 10 inches, distance between plant and light 12 to 16 inches that leaves you with around 1 foot of grow space. You will need to use florecents or cfls.