I am just an MD, and I have been invited to visit every program I applied to and I think I have a good chance at matching at any of the programs.
Programs, even the most basic science oriented programs, strive for a balance with their residents.
However, an MD/PhD might open some doors for you, if that is what you really want to do.
Lastly, it is important to know that pathology has gotten immensely more popular with US med students. I have asked three PDs about changes they have noticed. One said that 5 years ago they would get 30 US applicants and could only get 20 to interview, but this year they have 300 US applicants and now are only interviewing 40 of them. Another said they used to interview all US applicants and now they are cutting down to only 30 as last year they matched 5 of their top 6 candidates. I think it might fill this year for the first time in a long time.
The same thing has happened in anest, rads, and rad onc over the last ten years. Back when Primary Care/surgery/surgical subs were high in demand, Path, Rads, Anest would not even match 50% of their positions. It seems to be shifting. I don't think it is all due to "lifestyle"- a word I truly despise, I think it has to do with the fact that things cycle and now the job market in Path will be outstanding for the next few years. Path has always had the same "lifestyle", so why wasn't it popular five years ago? Lastly, I think you work hard in path, surgical path that is, and that is where a lot of the jobs are in path. Private practice pathologists work their asses off. If they want to make good money, they have to.