My sea of green in the making

I have grown lots before, but only a few plants at a time. I really like the weed that I grow, probally because I baby my plants. I just bought some seeds and put them into the ground because I have decided to do a sea of green with 3 different strains. The bagseed is just to get rid of them. Anyways I ended up with 4/5 sprouts of my NL and 5/5 on both the WW and the ICE. I have way to many plants in veg to fit in my closet since it is 4 1/2' x 2 1/2' x 8'. My Plan is to add 2 plants every 2 weeks, since I think 8 is the max I can have in the closet. have 17 sprouts so obviously that doesn't work, but I think after I have all the males out, I should have enough to fit all of them. (hopefully) I will take 4-5 clones from every plant to keep the sea of green going. The one thing that I havn't figured out yet is that I got given a 1000watt hps light and reflector and I really want to use it in the closet, but I need to find a way to properly keep my closet cool without losing any grow space. Any suggestions would be greatly appreciated.

here are some pics of my plants. the northern lights and white widow are the seedlings and the bagseed and the ice are the plants in veg state. The small plant in the last pic in the top right behind the bigger plants, was planted at the same time but is growing really slow. The leaves are small and have a blueish purple tinge to them and look velvety. It was one of my bagseed so I'm wondering if maybie the strain isn't suited to indoor growing or just something different.

Nice babies. Keep them coming. I am going to start ww, nl and ice so please keep me updated. I will definately pull up a chair for this one. I am a newbie so any information about these strains and what u are doing would be appreciated.