My thought is that if you have a serious desire to grow cannabis with a THC content, then you should seriously consider moving to a state that allows you to do that. If you just want to grow CBD hemp, you can get seeds for that from Oregon. They have been developing various strains of non THC hemp for growers of CBD products.
Heat and humidity, I really don't like that combination! Here in Upper Michigan, we don't have very many days in the 90s in the summer, but we get the humidity with the heat. Of course, the trade off for less heat is more winter...