The boss's house has the same issue. Probably a 30' by 30' wall of nothing but windows. Currently the saving grace is two large fans in the wide open living room/study area. When off the house can reach 85 easily.. when the fans are turned on it'll cool down instantly about 5-6 degrees just on medium speed. On high they'll have the house back to 70 and the AC will turn off shortly. For comparison the house is 12k+ sf.. and there are 5 AC units... all in the shade on the NE corner. At least that was planned out well..

There was once a large tree that provided ample shade to the windows. Mother nature took care of that a few years back. What do you say when a 40' tree is leaning onto the house.. yes.. you say thank you for the strong roots and damn you for the wind.