Self evaluation of skill can be misleading. If you're only diving about twice per year, it's certainly possible you're safe during those dives, but skills, knowledge, and experience atrophy when there are such long gaps between diving. When I take a break of about 6-months over the winter, I almost always do an easy warmup dive. Sure, I'm plenty confident to go straight to 130ft on my first dive of the season, but that confidence is perhaps slightly misleading.
IMO, you might want to look into dry-suit diving, that way you can dive locally in Colorado, and continue to gain experience outside of vacation diving.