Thanks for the feedback and good points, I should have posted the room arrangement. It is now inserted into the original post. The area to the right has a desk and two storage cabinets for trains. The left side of the entry door is the general line I tried to keep the layout to the left of.
Chuck, I was thinking that very point on the corners, my old layout had the corners and I used them as you mention.
Ted, I will check with Mianne on how much of a corner they will adjust. I tend to like the space per Chuck's comment. Right on the transformer cart / shelf. I was thinking of where to put this stuff. I guess it could go under. Desired min is 072 curves. I am with you on no duck under- been there done that.
Jan, like the comment to Ted, I will check on the amount of clipping possible from Mianne. My old layout had 32 inch width in many places and I did appreciate access to both sides of that. Maybe I am too conservative on the 36" and should push it against the wall. It would give me another foot + as you note.
Dave, Added the room layout. You can see the main entry door to the room, I was trying to keep to the left of that line. I will explore making the interior 30"- did not have a space like that on the old layout.