I think that you should definitely get Sensei's Top and
Chrome Mox. Even if you don't keep them for this deck, you will have another deck for them. If
Teferi's Isle is something you're looking at then I think you should get it. It's price is doing nothing but go up. Even if you don't use it now, you might use it in the future. I do not think that you need an
Expedition Map. The only real reason you'd need to get a land is for a combo, and you're already using actual tutors like
Demonic Tutor.
Expedition Map is just sub-par in this case.
Finding cards to remove is really difficult right now. I know in the past you've talked a lot about how Merieke is a vacuum for removal spells, so do you really want to get rid of
Swiftfoot Boots? And
Smothering Tithe is really good ramp, are you sure you want to lose it.
Now I have no idea what your playgroup is like these days, but think about if you really need
Ghostly Prison and
Propaganda. If you can combo off faster than you can be dealt combat damage, you don't need these effects.