Looking for Advice

I’d like to migrate my blog from WordPress.com hosting to my own hosting service, but I have a few questions for you WP aficionados out there:

1. How do I migrate and keep my permalinks intact? Most direct to calebhays.wordpress.com.
2. What happens to my Google search rank? Do I have to build it all over again? Is it less because it’s not WP.com?
3. Where is the best place to look for themes? I’d like to make this transition invisible to my readers (aside from this blog post), but I cannot seem to find the same “Chaotic Soul” theme. Eventually I’m going to change it anyway… perhaps it is time?

Thanks for your help! Just leave your suggestions in the comments below!

Tags: Self-hosted, Wordpress, WP.com