I wouldn't edit - what a great "journal" reflecting who you were at different stages. If there is a particular topic that intersts you, it might be fun to write a new poem and then compare to find the changes. Who knows - maybe there is a book in there somewhere. For sure, it is a great legacy for your family. I agree that all work needs to be dated. That way you can see what you wrote in comparison with what was going on with your life at the time. If you are ever famous, then people will know about you!
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From My Book: Generation G- Advice for Savvy Grandmothers"

"Grandmothers are a new kind of breed. I know I am one. Baby boomers are changing the face of grandparenting for the 21st century." www.martynorman.com, http://savvygrandmothers.blogspot.com