I'd go the APA route. If you don't want to complicate it, bitter with magnum. I like Columbus to bitter APAs and IPAs personally, so I'd do that. Then I'd add the Medusa at flameout and give it a 45 minute hopstand. If I had more, I'd dry hop too. But with this little amount, I'd want the flavor over aroma. But that's jyst my personal preference.