I still think though that people are severly underestimating the effectiveness of relative simple, low-tech options like awnings though.
My partner was downright insulted when I suggested getting some blackout curtains to reflect sunlight back outside when the sun is hitting our living room. I eventually won that battle after the first summer.
I mean, I'm currently in France, with 30°C (86°F) in my bedroom, do you really think that our shutters are opened ? At some point, sunlight is not even the issue. For the night to come, like the previous night, predictions are that we will have 35°C (95F) at midnight. I'm not even sure it was this hot when I was at Las Vegas eleven years ago. Las Vegas which is in the middle a of desert.
We are way past the awnings and we already have shutters and both of them are useless when the air itself is like a air dryer.
In France, shutters aren't like most American ones, here we mostly use either plain wood with no gap for light (old houses) or for most of the recent houses, we use rolling shutters that let 0% of light (and therefore, 0% of radiative energy from the sun) get to the window and will make the room entirely black. Also, most modern rolling shutters are white by default so they are pretty reflective.
In the current situation, it's the air temperature that fuck us by not getting down at night and so our (concrete) buildings accumulate the heat even at night.
Even if the shutters are wood and white when sun hits them they will radiate some heat into the indoors. But of course shutters are still better than letting the sun hit your floor directly.
That said, yes, if possible, you should be installing an AC unit as well (and the awning will help make the AC unit more efficient.
Vegas's dry heat is much more tolerable than lower temperatures in more humid places (which is pretty much the rest of the civilized world).