First, welcome! Be sure to post a more formal intro on the New Member forum, including details on what you're keeping shiny (pics welcome and encouraged).
Lots of factors play into longevity of the products, including driving conditionsand even the color of your car. Since it sound slike a daily driver, dricing conditions will just be an accepted thing. So what color is it? If darker like black, in that sun and heat, surface temps can soar and burn off carnuba waxes like Americana in a matter of days or even hours. It's the nature of the beast. But they also add a ton of shine and depth. I think PS is a great option, as is maintaining with HGG every few washes. You could also layer wax if you'd like for added shine and depth, just understand you may need to reapply it more often than you'd hope.
If you haven't already, read this for more: