This thread has been quite educational for me, and I see how you can work with people who are not doing exactly the same thing that you want to do. Should've been obvious
I work in Black studies, which is far more tolerant of trans-historical research. And so the one things I look for in scholars is their over-arching orientation toward Black studies; simply speaking, I can work with anyone under the umbrella descriptor of Afropessimism. I am still far more excited at the prospect of working with scholars who are asking questions about poetics, ethics, etc. Its too early to worry about this right now, but it would be interesting (if I am lucky enough) to choose between a "prestigious" university and a scholar who I really like.
If I were you, I would probably stick to Romanticism programs and think about the intervention I can make in this field. I am very faithless about periodicity so I would have probably become a modernist but I know historical periods are of distinct importance to people.