Sorry, I didn't mean to distract into a discussion of color management!
Now that I know the intent, I see what you're going for. I think a warm/sepia tint harms this one, the thing reads cold/austere/grand to me, so I would lean toward either a pure monochrome, or a selenium type of toning, cold tones rather than warm. That's pretty much just me hewing to tradition, but traditions ARE a large part of what defines how we see photographs.