You'll have to get badges made showing the date of completion - that might put a stop to them asking all the time
Will you rent it out when you're not using it - to family and friends at least? I know many of the members here are going to do that - not everyone is buying as an investment and not everyone is buying only for their own use but of the latter I know many hope to just cover maintainance charges and maybe flights out for themselves, by letting for part of the year.