Maybe you get used to what you have, but it has never crossed my mind to tint the windows. When driving, judicious use of the day shades while traveling west in the afternoons or east in the mornings has always resolved any sun issues for me while driving. Bright sun has never really been a problem in my maybe 60,000 miles driving an Entegra.
On heat, I bought a set of MagneShades for both my Anthem and for this Cornerstone, and those provide plenty of exterior heat absorption. I routinely use the MagneShades when parked for more than a couple of days in an area with significant heat. If you haven't looked into those, you might. They are expensive but they are VERY good and are easy to install and removed from the ground.
If you go ahead and do the tinting, let us know how it works. My side windows are tinted about as much as I would want already...
Gary and Dee, Zowie and Bowie (traveling cat sibs)
2019 Cornerstone 45B, X15-605hp, Imperial, Spartan K3,
2013 Honda CR-V toad, Demco Excali-Bar II,
Demco Baseplate, Demco Toad Light system, 73 de W5Fi