[Crystal_Ageha]

Well, it's pretty much 100% that You were..., BALLAD and Surinse will be on because they were all A-sides, all had PVs, and all were on regular promoted singles (unlike the very rare Mirrorcle World - and Life was a B-side, no doubt).
Also, it's highly likely that Sunset will be on, too. Not only because it was an A-side with a PV, but since Ayu said it's hard for her to have those two songs separate; though, there is a small chance that either she won't add Sunset or she'll make a new version of the two ~LOVE is ALL~ songs (like what she did for LOVE). And really, I think a new version is much more likely than only using Sunrise and completely ignoring Sunset.
RED LINE is the only one we can't be sure of.... Considering it was the only B-side on that single, and that it didn't have a PV and is the least talked about, it seems like it won't be on. I personally don't think it will be... But then again, RED LINE also has at least a little chance because of the significance of that song (the whole TA thing).

And as for Microphone and Don't Look Back, even if they don't get PVs or singles, it would be odd for her to literally pull those out of nowhere yet not put them on the album.