Absolutely use the house. Josef can make any changes you need for the full moon....just tell any of the elves your requirements and he'll take care of it. You know the lay of the house from having been there before.
No, maybe you didn't, but the same can be said for anyone that inherits from their parents, so shush about it! It's yours!
Of course you will worry. But if you need to talk, I'm here. Or if you need a little vacation from reality. We have a boat, you know. And Antonin swears he knows the charms to get from the lake to the ocean. Greece is beautiful, and lazing in the Mediterranean sun can't be beaten for a relaxing break.