Gold star hunting

I’m going to a big card show in a couple weeks, and I’m going to finally achieve my dream of trading for a gold star (or multiple). I wanted to get an idea of which plan this community thinks is my best course of action when it comes to investing AND just plain old coolness. I have enough trade ammo/cash saved up to do any of these options:

1. 2 of the legendary dogs in a PSA 8

2. PSA 9 Suicune (would save a couple hundred $ for other stuff)

3. PSA 8 Vaporeon

4. PSA 8 Celebi

5. PSA 8 Kyogre OR groudon

6. PSA 9 Registeel or Regirock (would save a couple hundred $)

7. PSA 7 Metagross

8. PSA 7 Alakazam