I print one album at a time, when I have enough for the Shutterfly free unlimited pages sales. My albums are all about 100 pages. All random years, days, events, moments, stories.
I scrap the same photo multiple times, and it's printed in books that way. Sometimes it's a pretty page, sometimes it's a story about something unrelated to that photo that I wanted to document. I scrap events, moments, holidays however I see fit.
When I started this hobby it was with the intent to get the memories, yes, but I still took the "less" is more approach. I based my approach on the way my family photo albums were when I was growing up. They were a culmination of our lives. Just with no stories and sometimes no dates. Back then when film and printed photos costed money, sometimes a roll of photos wouldn't get developed for months. You'd have Halloween photos with random moments and vacays and my parents would stick them in those "sticky" film albums and we'd look through them.
So I guess that's why I've been so comfortable not having a 'set" agenda to this hobby.
I have never scrapped chronologically, I don't do "vacay" or event albums, and I don't document everything. The moments & memories are there, in my albums. I'm happy with that.
Do what feels right to you, not what you think you need to do.