I can tell you for sure the 9000 will not be enough I got cooler temps I run 4 lights but 2 rooms 2 in each and the 9000 is barley getting the job done if my outside temps go any higher I will have to upgrade oh and I am running 2 440 cfm fans 1 on each side to cool the lights I think the 16000 would do great get a mini split that is what I am looking into they have a dual zone split but its 2k so I am still trying to get away without it but the singles are like $700