[gr0wer]

You only need one fan sucking out the fan will also suck new air in the other hole and any leaks so no smell will come out if you haev the vent going outside using flex duct tubes from a hardware store (dont ever ask for help at a store when collecting grow suplies unless you think of a coverup beforehand).

For you shelf spacing i would recomend setting it up with a 14" tall top shelf for veg and 2 28" shelfs for flowering. you will have to use angle brackets and screws, not nails, to get the right spacing, they are at hardware stores. Have the plants in month groups so there would be clones (after your first grow) veging at the top then after a month. Then they go into the flowering area and a new group of clones is put into the veg area. The first group flower there for 2 months then you harvest the first group. There will always be 2 groups flowering and one in the veg shelf. Make shure that the veg light dosent leak ino the flowering box. Have 6 plants per month once and have 1 extra plant in the veg group in case if one dies or if there is a runt plant. Then just toss the extra/runt plant.

and you mentioned DAD you better lock the door to this room or put a lock on the box if he wouldnt like what your doing. You can get kicked out of your house if he gets pissed off.