Songs off Somewhere in Time, besides Wasted Years and Heaven Can Wait, find their magic on studio. I don't think any of those songs will find their magic live, if Maiden decides to play some of them, it's only because of the fans' curiosity about how they will sound live, not because of performances. So, I won't bet on Somewhere in Time songs, sadly.
But Seventh Son of a Seventh Son might get a chance to be played almost in its entirety. Infinite Dreams and Seventh Son of a Seventh Son are musts in my case, they'll be two of the "long songs" segment. Moonchild possibly will be the opening song, The Clairvoyant will get a chance, The Evil That Men Do is a popular live song, so is Can I Play With Madness. The only ones that have low chances of being played are Only the Good Die Young and The Prophecy, but I actually do expect Only the Good Die Young to be played live this time.
About 90's material, I strongly expect Afraid to Shoot Strangers to be on the set. Blaze Bayley era material will be ignored once again.
I'll try to create a "prediction setlist" for this tour : (that's not what I want, that's my prediction)
1. Moonchild
2. The Evil That Men Do
3. Still Life / The Prisoner
4. Infinite Dreams
5. The Trooper
6. Can I Play With Madness
7. Afraid to Shoot Strangers
8. Wasted Years
9. The Clairvoyant
10. Seventh Son of a Seventh Son
11. Only the Good Die Young
12. Revelations
13. Iron Maiden
14. Hallowed Be Thy Name
15. The Number of the Beast
16. Sanctuary