Welcome to the Airstream community. For full timing a 30' should be ideal. We spend about 100 nights per year in our Airstream and often wish we had the extra space as well as the recliners.
Canopener will be the perfect opportunity for you to meet some wonderful people and talk to experienced owners about the pluses and minuses of their rigs as well as some great places to visit.
Here is a link to the Alumaflamingo website:
If you haven't seen the video of last year's Canopener, here is a link:
Canopener 2014 Video