One problem was what to to with the website. I could ether move it to my main computer and have it running 24/7 to my wife's big despair) or find some kind of online hosting solution.
After looking at solutions such as Google App Engine (no support for Rails 3 yet) and VPS (expensive) I finally found Heroku.
Heroku is super easy to get started with and offers awesome support for Rails 3. So after a bit of adjustments like porting from the current mySQL database to PostgrSQL I got the website up and running by just typing
$ git push heroku master