HPS is only flower, Metal Halide is for veg or just use cfl 6500k/T5 type lighting for veg. What I would do is cut a hole on the bottom of the large part of the cabinet for a passive intake. A 4" hole should be sufficient. You can go with a
few of these on the sides, you can get them at any electrical supply. You can also suspend that light setup from above for over head lighting. Then what I would do is get yourself a carbon filter/fan setup I have
this one I would suspend the carbon filter up top run some 4 inch ducting into the shelf area next to where the filter is hanging (so basically the second compartment down from the top). Then cut a 4" hole out the side of the cabinet next to where the fan is sitting so it can exhaust the air out using negative pressure. Now you will have a full exhaust setup and it won't smell at all. Use the remaining shelves for storage of equipment. Does that help?