I don't understand, is projector location 1 at the bottom of an arched lamp (I'm missing something there, would it be in an end table or ?) and projector location 2 mounted to the wall above the couch? With location 2 I assume you would need lens shift because it's below the top of your desired screen.
16 feet is a pretty long distance to project, in a room with a ton of windows, onto a screen that's very large. So this would only work at night.
You can get an IR extender that would solve the "ir remotes don't go through screens" issue.
You have a gorgeous home and good taste in decor, it will be interesting to see how you integrate all this and make it work.