Customizing Google Maps Plugin

Everything is working as expected.
In the marker list, what's the best way to display the associated post data (linked post title, agm_post_links_container) before displaying the physical address (agm_mh_marker_item_content)? I don't see any templates I can edit, am I left to manipulate the js file for this?

Additionally, Would I be editing the core files, leaving them in danger of being overwritten on the next update? Where should the altered code reside for safe keeping?

Currently:
123 Main Street, New York, NY 22030
24 Hour Fitness (post name)

Desired:
24 Hour Fitness (post name)
123 Main Street, New York, NY 22030