Never put the data into a format you can’t be sure you will be able to get your data out of in the future. Things change.
Save as word by all means but also save as text too, in case you can’t fire up the right version of word in the distant future.
Personally I’d make multiple copies – put a nice blog up, save as HTML/text/word thus keeping a backup on your PC and also online.
Also remember that CDs/DVDs degrade.
Scan your images at the highest resolution you can (disk/time!) ready for the future, you can always copy & ‘downgrade’ them for use. Save as TIFF then have JPEG versions about. Also scan the book as that would be a nice nostalgic bit.
Just my 2p.