There are a lot of details you should handle, legal and otherwise.
Look at * diesmart.com * It provides the most information and the best roadmap. Created by a friend and a wonderful lady who went through it all with her mother. You can die knowing you didn't leave anything unresolved.
My mother had a "burial" policy and specified that she be cremated and the remainder used for a family celebration. My sister did the same. Throw your own farewell party!
My sister died rather unexpectedly last year. She was the oldest in the family, six years my senior and had many family stories that are now lost. The one thing I had planned to last summer was to visit her and record those stories. Now they are lost and I am the one with the most family stories.
In any case, video is now easy to do and I urge you to record your family stories and your memories. If you have the writing discipline, do a journal. If you have siblings or other relatives,you might ask for their help. I think that if you do that, you will say everything you need to say. I'd let your family see them before you go.
A little genealogy might fill in some blanks. There are 14 family history libraries around the country usually next to an LDS temple.
"If lie has meaning, then death has meaning as death ends life!" - Viktor Frankl, Man's Search for Meaning