Gift Question?

I have been working on a project for SO and SO's dad. For SO I have designed a photo book through Walmart.com of photos of our daughter. For his father I had designed one however it includes photos of all three of his grandchildren. However all three children belong to SO. So should I have incorporated SO's other kids into his book as well? This book is meant to be an Easter present for SO from me and LO. I was thinking of designing another one for him for father's day which would include all three children. SO has no idea I have been working on the projects.

Should I wait for the second book or add them to the first book? I don't have enough photos of his other children to make two different books and we are still hoping to see them soon and get more photos.

I would wait and just do a fathers day book with all of his kids or give same book to dh as his father. Even though its a present from your lo, it just doesn't sit right kwim? He has 3 kids so I would do all or none type of thing.