I feel your pain
@TeamHermes .
As far as coop design goes I agree with all of the above. Chickens in warm weather can be tricky but it can be done.
You can google "hot weather coop plans" and find lots of great ideas well presented.
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I've personally learned to make sure all is as open as possible- including and especially the nest boxes. Best to give girls air at that critical time.
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Make good use of shade cloth, trees, large overhangs and room on the roost and a well placed fan- always fantastic.
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Give the girls a safe place from predator's and then make it fun for you and them. You can always add wood or staple feed bags to keep out the wind and rain when needed once your frame and roof is up.
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Welcome to BYC, congratulations, good luck and keep us posted!