Booty is right. Just do it. If you commit fully, don't bother putting anything in storage. It'll just sit in storage year after year and you'll just incur the storage bill. I finally got rid of all my junk last year. Living aboard sounds romantic, but rest assured, you'll give up alot of little creature comforts. If you're not committed, you'll hate it.
Incidentally, I moved aboard a few years back, and I really don't see why more people don't do it. I live on a 32' Islander. Plenty of space for just me, but I have a son, so it gets cramped at times.
Bottom line is you can't enjoy it if you don't do it.