Welcome Gwen - so sorry to hear about your sister!!!! I'm 39 and my 43 yo sis just had a big health scare too....

The "best plan" is one that you can live with forever, going through the phases as outlined in the book. It's an individual choice. Read all three (and then read some more) and decide what appeals most in terms of variety vs. restriction.

Take care of yourself!!!!

Julie