Hi,
Personally, celeron processor has always let me down. They are always a cut off of a way better processor. They might work well for a year or two and then go down to a crawl. But most of the time laptops will let you down after 2-3 years anyways.
Come down to what you want to do with it.
Homework, web browsing and watching movies: it should be fine
Gaming or intense work: forget about it.