Scrapping chronologically would probably make life a whole heck of a lot easier!! But I like to make things hard, so I don't do them in order.
I keep all of my PSD files until books are printed and I have only printed 2 books and will be redoing both of them since my scrapping skills have drastically improved since printing. So I'm rapidly running out of space because I keep scrapping way out of order and hold on to all of my PSDs until I can put them in a book... I should really start scrapping chronologically... Uh oh... feelin' inspired!