I agree with the above. Maybe get your children to pick their favorite photos. Or only scrap the big events or moments. Or put several Christmases on one page.
Any way you look at it, you've got your work cut out for you. The basics that you've got will be just fine - clean and simple scrapping is great for showcasing your photos! Just take it easy, don't set goals that are TOO ambitious to start with, and make sure you enjoy the process! Keep us updated on how you're doing and upload in the gallery so we can see your work!