I plan on buying this awesome home in the interest of creating a assassin/dueling guild. However I am concerned about one thing that will potentially be a deal breaker. You can only duel on the grounds of a house but not inside and earthtear cavern doesn't exactly have a inside. Is the whole space considered grounds or is it all considered inside? Zos if you could answer this one question I would really appreciate it. I would hate to buy this amazing home if I couldn't build an arena for me and my guildies to duel in.