honestly I think 1A would impress people who don’t know how to yo-yo the most. Also remember, this isn’t a competition you want to do crowd pleasers (like 4x follows to jade whip) stuff that will make them scream and go WHAT THE? boingy-boing always seems to impress too.
Just do whatever your comfortable with- if you feel confident doing 5A, then do it, most people are amazed by it that don’t yoyo(well, in my experience).
Do some visual tricks like Boing-E-Boing or Eli Hops. Also do some classics like Rock the Baby then maybe into Dizzy Baby. You could also end with Skyrocket.