Rachel
Congrats on being under contract. Your story is similar to ours in that we bought our first place as a true 2nd home getaway and it wasn't until we found we didn't use it all the time, that maybe we could try and rent it. The rest is history. Once we listed (March 2019), it's been booked solid all year. Only hiccup has been Covid where county stopped STR from April to Mid-May. Once restriction was lifted, back to full occupancy (at even higher rates).
I will tell you we are north of Asheville at 4400' elevation. I don't discount what other mention about AC, but we don't have it. 70%+ of home in our community don't have AC as the few days in the summer it gets hot don't outweigh the cost and windows open and fans get it cool enough.
AirDNA also tells me that that in my zip code, AC is the #1 amenity...yet we have 49 reviews and a 4.9 Star rating. Not sure where they got their data on that one. My suggestion is to determine what the others home have. Ask questions of permenant home owners with how hot it gets and if they have AC. Just do your homework.
Its always interesting to hear how various owners get their bookings. We are 95%+ VRBO (listed on AIrbnb). We price manually. We had no idea what we were doing this first few months (really first year), but we've got our groove. We know weekends are higher, holiday are big, make sure you have minimums in place for busy periods. We've seen the pattern where our bookings are 80% 1-2 months in advance, I don't panic until about 3 weeks out to start adjusting rate. My son and I periodically peek at them and adjust as needed to maximize.
Good luck with Banner Elk as we love that area too!