Sounds like a great idea to me! Pretty much along the same lines of what we did...save the dates about a year before with general info. Area, date, resort, website. I wanted to do exactly as you said and only then send out more information or an "invitation" if you will to those who have deposited but my FI didn't agree to that. He felt like the save the date being a year before the DW left room for people to forget/not view website and not realize deadlines etc. so we ordered invites. I pick my battles! Good luck