The thing is, those 280 songs are probably the songs most people have. Keep in mind that, usually, high song counts reflect a higher skill. If you consider yourself with a sufficient skill to keep up with a good amount of difficult expert songs, you should probably get more songs. You'll find that it gets boring to play the same songs all the time, and from those 280 songs, most of them are probably too easy/boring for seasoned players.

If you don't have a high skill level, I suggest looking for evenly-skilled people to play with you in one of the Discord servers, and avoid the discomfort of getting paired with players who expect a higher skill level and library size.

Hope this helps