I'm on the "read-through" stage of Alpha now where have the computer read it to me while I read along and make small changes. This helps me catch sentences that don't sound right, fix small continuity errors, and get a feel for the overall flow. Blazing through the book in 2-3 days is really an important part of editing because it helps me experience what most of my readers will experience as they read it.
After Psion Alpha is finished, I'll have to decide what to work on next. I have several options, and all of them sound enticing. I'm thrilled to be so close to having the Psion series completed. Only one book left! Part of me wants to dive in and finish the series.
On the other hand, Super Six is waiting for me, and I already have a publisher interested in it. Plus I'm super invested in the story right now. And on the third hand (what???) A Tale of Light and Shadow 2 (formerly Storyteller's Tale) is rearing to go. Two drafts done and lots of ideas for the 3rd draft.... That will be the easiest of the three projects.
Part of the problem with Psion Omega is that I haven't plotted it at all. Yes, I know how it ends, yes I have lots of ideas for the story, but so far it's only ideas. So technically Omega is the farthest from publication.