A mixture of both...I quite like the idea of the "PAR" layout in the Anyrail layout plans. This would give some mainline running on the outside, with smaller goods on the inside. Eliminating an access well would make more space available. I have a list of a couple of "must haves" though, and maybe this is where the problem is....I want a level crossing for an access road, this would have to be a double one I guess, a tunnel, a viaduct(metcalfe kit, 725mm in length), a deep rock cutting, an embankment, and maybe some forestry works. All these elements are local to where I live. Maybe this is asking too much?