Can I use a Ceros preview link instead of a published Ceros link in MarkUp?

Absolutely!

It’s important to note that since Ceros preview links update live while changes are being made in the studio, the previews in MarkUp will also update live. So keep this in mind if you are making updates in the Ceros studio while someone is reviewing your experience in MarkUp. Also, MarkUp strips the Global Layouts panel from the top of the preview window, so you will not see that panel when viewing your experience in MarkUp.