This is my current layout. The door is at bottom right hand side and windows of left wall. Currently I can walk around the left side. I will be rotating it 90 degrees to the right this weekend and against the left wall. And will be starting a Logging operation along the right wall. Will determine size once everything is shifted. I can have two trains operating on continuous running , one in the town area , another around the whole layout. The yard can be switched as well as industry near the yard without interference . By using block switching the Town area can be switched while dodging a Running train in this area . This is a D.C. layout and have no intention of going DCC.