Hey plan b.
as long as you have an open entry way the heat isn't an issue with bees here.
They circulate the air and use water and evaporation to cool internal parts of hive.
I paint hives using light color oops paint and place them out in full sun so they warm faster in the morning.
I have only had one heat issue and it was my fault. Tried to do a combine in mid summer.
Put newspaper between boxes and didn't give the top box a way to get ventilation.
I should have propped the top open slightly but didn't know that at the time.
Wound up cooking the top box of bees , including the queen. Felt like a murdering moron !
Other than that heat hasn't been an issue.
You might want to provide a water source near your bees. I take plastic drums and cut the tops off. Leave the bottom half about knee high and add a layer of oyster shell. ( I don't know why bees like it but they will pass up fresh clean water to get to the water with oyster shell. I assume its the calcium )
I then fill with water. Slice pool noodles in cross sections about like a sliced pineapple and toss them in the barrel. This provides a place for them to land and drink from without drowning.