Any grow shop would have it, you could and should get a vented hood, and you will need a seperate fan for exhaust out of the room.

The grow shops will sell all of this - just "google" a local one.

I would personally get a 3ft 4 bulb set of T5 floros to veg with, and a 400 watt HPS to bud with, while budding with the 400 watt HPS you can be veging new ones under your t5s, possible set cab into 2 layers, upper layer with 400 watt HPS ( orange light ) and lower 1/3 with T5 floros and veging room.