I would go with the repeater… my question is why can’t you drag the rows of the repeater to reorder the images? This is something that should be possible.
You can do it with a gallery, but this would require adding a field group with location rules for attachments and then getting the fields acf fields from the attachments. The real con here is that any image could only link to a single place where with the repeater you could have the same image linking to different places.
