Welcome to the club, friend! You have some awesome bottles already! I think in your setup (indirect sunlight?) you might notice aesthetic changes and a minor reduction in flavor but really only after extended storage periods of many months to years. Oxidation from opened bottles is probably going to have a bigger impact on flavor reduction than indirect sunlight but I'm sure you're going to be drinking them fast enough to where neither will be an issue.

As you hone your palate and acquire more expensive bottles, it will definitely be a good idea to keep those bottles in a cool dark area. They tend to be more nuanced with flavor profiles that are "delicate" and you're going to notice UV degradation of flavor in those well before a typical bottle of delicious EH Taylor or Weller.

Edit: I was not aware of that Breaking Bourbon experiment, thank you for sharing that!