Welcome to the Ivanised gen 1 club! You beat Exupnut to it, brilliant!
And a really nice one too, I'm real pleased for you.
Yeah, 7k rpm is where they really get interesting, glad to hear you're taking your time with that. It'll now be really hard for you to live with any other bike for long - nothing else is as all-round capable as these are for so little dosh.
All we need now is some decent weather so you can really get to know it, at least you got some to pick it up in. Then it'd be really interesting to hear more about what you think of it, especially coming from the 600.