I won't be exhausting any air i want a completely sealed room and the Minisplit is 12000 BTU i know that is 4kbtu per 1k watts, but i don't know if I'm cutting it to close i will have my co2 dehumidifier my six circulating fans as well as can 150 filter in there i mapped it out for only 2 1k lights, but if i can add a third i would not mind i just want to maximize my space to its full potential without doing harm