It’s quite a generous area to work in.
In the sketch I added in a platform to illustrate the proposed layout location compared to the windows. I’ve shown the layout in red in the above sketch.
As mentioned, I have always tended to think in terms of hanging benchwork from a wall using some sort of bracket. I just don’t see doing that here. Over a mug of tea after work today it occured to me that I need to think of this differently. I started thinking about those kitchen islands on wheels (here’s a link to one on the IKEA website for an example: http://www.ikea.com/ca/en/catalog/products/30240348/) but in a much larger format. In many ways, the benchwork would be like any free-standing frame used under a typical tabletop model railway or modular railway. What I was thinking is that two of the legs should be on casters so I could wheel the layout either out into the room to operate or into another room if op’s night coincides with some other living room activity.
Now that the railway is free of the walls, it still needs to fit in the general area, but it can now be a more free-flowing design. I’m starting to think in terms of something more eliptical than rectangular in plan view. I expect that I’ll be stealing a few moments in the next little while to sketch a few ideas out on paper to test the space but I already have a few concepts in mind and am excited to test them out.