Continue making this
The content of the dialogue wasn't all that bad, as it wasn't random gibberish and did move the story forward. It's the grammar and mechanics of the dialogue. (For example, the first line should be "Man, I'm bored.")
What I don't get is how Vegeta and Goku are only about two and a half times as powerful as Amy. (She's power level 12 and they're only 31-ish).
I don't think you should start over with a Naruto flash. I think you should continue with this flash series-and add Naruto to if you want, since it's about pitting random characters against each other.