I think you will need a chiller. I have a very similar setup 220 with 3 400 watts.
Four level split with tank in the basement and sump in the first basement. I have a 1/2 horse chiller and when the weather went to 20 this past week it cut in for the first time this year. So i can only imagine when it gets to 30 that thing will be running quite often. Is your canopy vented? I have 2 fans on mine one pulling fresh air in and one pushing hot air out.
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