1200 watts hps, ac and 30 early special and top 44

only question is im running a duall 600 watt ballast for 1200 watts in my 6x4 closet. i have 30 clones, rooting with 3 more weeks of rooting/veg until flower. right now there under a 400 watt metak halide. i have a 7000 btu portable ac unit in the garage i use to use in the computer room. i no the ac unit will keep the room cool with the 600s so can i just use the ac unit instead of a inline fan, and coolt tubes. because for cooltubes it going to take roughly $50 for the glass tubes plus ducting and a good fan, or a free ac unit ya no. plus the time will take me 5 minutes to plug it in, or 2 weeks to order all the bs.. i plan on running a small 6 inch inline booster fan just for humidity, but my main concern is the degree of the closet. what do yall think