Having not done this, my suggestion would be to set them both up as PtP Bridges. That would most closely emulate an ethernet cable strung through the hallway.

The other options are likely to take a significant amount of configuration time to set up (Edit: on both the APs and your existing computers, etc.), but might be more efficient, depending on how smartly the bridging is performed. But PtP Brige should be easy to set up and get working tonight.

Again, though, I haven't done any of this with the products you're using.