What order should we visit the Seychelles islands in?

Hi everyone, we’re 2 adults and 2 teens, and we’ve booked our flights from July 4th to 17th. We’re discovering this destination through the forum, blogs, etc.… we’re hesitating: what order should we visit the islands in? How many nights on each? (12 nights total).

Since all four of us are divers, that’ll be one of our main activities…

Thanks in advance! ;)