I am completely new to model RR's. I want to build an O gage Lionel set with Diesel DCC locomotives. I have room for a 4' x 8' board but *could* stretch it to 5' x 9'. I've been looking and looking at 4' x 8' layout books and can't find what I want. I want the ultimate 4' x 8' layout...any opinions? I want a passing lane and a yard. Please help!