Update on the city wall - I got to thinking, and changed the material on the wall from insulation foam to wood. I went to Lowes, bought some stuff, and did a lot of cutting and nailing pieces together tonight. It will cost more to ship, but ultimately it will be a lot more durable and I can put more detail into it I think. I don't have the best tools in the world and cutting it with a hacksaw was a pain in the ass... but I think it will be better off that way.
Here's what the layout is looking like right now - I really hope this is ok with you guys -
The bars on the gate will be removable, and will actually be about 36 inches long, just 26 inches will show if the dimension is squeezed into 6 feet. Of course it could be stretched out too.
Now... IF I have time, I'll add an option center piece that can stand as a tower between the two walls, and connect the gate - that way one gate could be open, another closed. I don't want to commit to that though, but if I can get to it I will. Right now I'm still in the process of finishing my basement and the baby room so time's limited.