This would be a big mistake as people would only know Slave and Toxic. I wouldn't be surprised if this were true, though. But it wouldn't be a flattering move for them to market the rest as "hits" and the GP not know them.
I will legit be so unbelievably surprised -- but pleased -- if she includes TOMH and BOM. But the GP is gonna be confused as ****, trying to snatch up these "new" Britney songs they've never heard after the show.