"From IM to FOTD" means that songs from that time span will be played. It does NOT necessarily mean that every album of that span will be featured.
My guess it that they will only play FOTD title track, and no song off No Prayer. If they really feature that album, you can bet your left testicle that it will be Bring Your Daughter...
Some People here speculated on Public Enema or Hooks In You, but that's less likely than Donald Trump turning liberal. Maiden are generally shy of deep cuts, and if they get daring, it would never be from their least popular albums. It will be Daughter or nothing.
If you are really, really lucky, you may get Afraid to Shoot Strangers, but I highly doubt it. According to Metal Injection Bruce said he ltour will feature some never before played songs, but I highly doubt that those will be from these two albums.
Which is sad, actually. There are some cool gems that long for a place in the spotlight.