Chocolope 1st grow

I haven’t done anything to the plant itself, just letting it adjust going into flower. Unfortunately We had a really hot and humid week here. Temps in my grow room were upto 30 Degrees light on. And 27-29 Degrees lights off. And the humidity was okay with lights on, around 50-65% But with the lights off, it rose upto 75-80% as I don’t have ventilation in my cupboard. I got a dehumidifier, it helps with the humidity, but the room got to over 33 Degrees in under a hour. I suppose I’ll just save the dehumidifier for when it’s winter. Does anyone have any ideas of what I can do to get temps and humidity down without putting a hole in the roof ? There’s definitely not enough room for a proper AC either. Also, I haven’t seen to much of a stretch yet, from my research this could be due to my temps not dropping overnight. Am I correct ? This past week I’ve added king kola to my nutrients mix, 1Ml per L. Tomorrow, the start of week 2 of flower. I swap my base nutrients over from Cali Pro grow - to the Bloom