Dover Court is a fine school, it has a mix of mainstream, ESL (english as second language) and special needs kids. It is fairly small, advantage is that all the staff know all the students, and it has a very nurturing feel to it. It tends to have smaller class sizes too. My kids settled in there straight away. The only down side is that administration there can be a bit of a pain and very rigid, but then that is not the schooling, which in my opinion counts more. Sorry can't comment on Chatsworth as I have no experience.
Ma'am has already covered the
condo bit, and the clubs, but if you are not in a condo and look at the clubs most of them have a sort of try before you buy system where you can sign up for a month or so to try it all out without having to sign your life away. This is not a bad option to try out the different places, and also gives you a chance to socialise when first arriving if not in a condo.
Good luck with the move.