Hi all, I've got an 8x3' space for an N scale layout. I've been having a hard time with track planning for several weeks, and I guess I can boil my question down into this: I have one or two trains that are longer, and would like to create the illusion that they're 'passing through' the layout periodically by stopping them out of sight once they've made a pass. Is it a safe bet to say in this size space, I'll almost certainly want an oval of mainline around the perimeter of the layout? I'd really like to get something down so I can start running things which I figure out all the switching/operations details in the middle, but I'm using flex track so don't want to waste a bunch if there are other options I haven't considered. thanks very much for any advice.