No offense, but I really think that written messages should be limited to the main message. Otherwise, many people will want to write their own personalized message and it would get bloated. (When I saw it, my first instinct was to write my own message, for instance.)
Even if it didn't bloat it too much, the message might be taken as being from all of us rather than a single person as well, which could cause some confusion.
Having said that, your message is really great and very well-written, and could easily be tweaked slightly to be a good main message if you wanted to. It might be something to consider.