CP9 Responsive – how to size / position a group of overlay objects from breakpoint to breakpoint

I have a project with a photo and multiple overlay objects on top. If I set the overlay objects to top position = % relative, they flow nicely from breakpoint to breakpoint, sizing together and staying in position together (photo & overlay objects)

Here's the challenge… On the mobile view, I need to enlarge these items because they are too small on that view, so I want to exaggerate their size for readability purposes. Short of resizing and repositioning each object individually, isn't there a way to do this more efficiently? I've got 4 breakpoints, so I'd need to do this on 2 of the smaller (downstream) views. I tried to group them and size them that way, but it affected all the upstream views badly so didn't work.

Looking for an easier solution?