@GazooRC posted:...
I don’t have room to do a double track section though because the big boy requires 11” curves. A full curve takes up the whole side of the table.
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Have you actually run the Big Boy on the 11" curves? Just because it "will run" doesn't mean it will work smoothly or that you'll like how it looks.
I don't have a Big Boy, but based on what I have - largest loco is a Berkshire - it seems like there will be a lot of overhang with that radius. Suggest setting up the oval and running it to see if the overhang is acceptable to you.
One option for making a shallow layout look larger is to add a partition down the middle to block the view of the far side of the layout.
Figure 8 is fun on a tinplate layout, but I'm not a big fan of it for scale trains.