Only you know your family. We had two kids who went to a local university (25 minutes away), and we rarely had visits or phone calls. Being close made it not urgent. We see and hear from the kid that is far away at USAFA, more than we did the local ones. Being far away, we make seeing or hearing from each other more of a priority. It's not as urgent when they are a quick car ride away because it is always possible. We generally visit COS twice a year, Parents Weekend, and one other time. That seems to be a good balance for our family.
However, I do hear that COS parents are able to go to sports games so if your cadet plays a sport, that's a really fun possibility too. All families have different dynamics and cultures. For some, being able to get together more often is the norm. If I had a work-from-home job and a cadet in a D1 sport, would I have moved to COS for a few years? Maybe that could be an adventure. But I wouldn't expect the cadet to come home twice a month. Our experience as I have said before, we never really saw our local students because they were busy being college students with their own friends. And remember, USAFA students are even more busy than regular students.