Well I ran into several OGR Forum members at the Greenberg show in Monroeville, Pennsylvania today. A couple commented on this topic. Yes, Dave, as if I didn't have enough to think about, you add another idea. 
That's okay! That is why I started this topic. Everyone should be happy to know I only bought one thing at the show; an MTH 2-bay hopper car for the layout. I really didn't see anything else that tugged at me, maybe because in the back of my mind I was thinking, I need to buy lumber and track!! 
I did have a good time at the show, and was glad to visit with so many Forum members!
Oh, yes the turntable is the Atlas O that screws down on the top of the table; no pit, so clearance isn't an issue. I am thinking against it and going with the other plan with the loops and the passing track. I may not use the passing track when I am by myself, but it would be fun if someone else was running trains with me.
