I just started a project like this! I live in an actual underground home and after visiting Hobbiton I decided that I would recreate the mailbox and gate as the entrance to my home. The only part I know I'll have a hard time with are the fleur de lis straps. Any chance i could but a set of castings from you? It looks amazing.
This is fantastic work. I know what you mean about worrying. Its what's kept me from building a themed mailbox. But surprisingly, I've found that when something looks nice people, in general, leave things alone. Again, you've done great work.