I agree, the top drawing will probably be better at least in terms of access to the room. But with complex rooms like this (not a simple rectangle) it's usually best to experiment with placement. If that was my room I'd consider putting the screen and L-C-R speakers on the left wall of the diagram, firing back toward the doors. This would free up both the left & right sides for treatments, for the very important early reflections. If you face top or bottom you'd likely have to use freestanding treatments in front of the window which is a bit of a hassle and limits what we can do.
I'm not a huge fan of open baffle speakers for several reasons, one of which is that they are more limited with placement, so if you go that route be prepared for a lot of time spent optimizing layout. They usually do prefer to be out from the wall a bit, but if they are less than 4' from a nearby wall there will likely be SBIR issues (nulls in the bass response). But then accurate bass response is not really a characteristic of the open baffle speakers I've heard..... which is another issue.
But regardless of how you set up or which speakers you end up with, we can definitely help with the treatments. Let us know when you're ready.
