Yes, it's acceptable and quite common to have more than one adviser. You should always aim to enter a program with more than one person you could see yourself working with. Your research questions and approaches should and will evolve. Beyond topical interests and overlap with potential advisers, an equally important consideration is their respective methodologies. You may find this at both a departmental and individual/adviser level within a program.
Your research doesn't need to align exactly with theirs. In fact, it probably shouldn't, in my opinion. You're likely to benefit more from an adviser and program that offer you holistic support with regard to your topic, ie different time periods, mediums etc. As I mentioned above, your line of research will naturally evolve during your time in graduate school and by working with advisers whose work isn't exactly aligned with your own, you're exposing yourself to relevant information and exploring new topics you may be interested in.
Definitely mention more than one POI in your SOP. If a POI were to leave, have a very distant sabbatical, or your area of research changes slightly, it's important to indicate synergy with other faculty.
Have a look at Princeton too; Irene Small is doing interesting work in Contemporary Latin Am. and there are several other faculty within the program who could you could (potentially) work with.