That's great news!
I hope you have done proper research on what caveats come with it. The EU is less business friendly than the US.
I think an EU based office (no matter which country) can cater to all EU customers. Shipping will obviously be a bit more expensive for non-German customers, but it's going to be easier and cheaper to send stuff back and forth.
With the SEPA, payments within the Eurozone are easier but I am not sure how relevant it is given that most people...