@artfull dodger posted:
Welcome to 2 rail O scale model railroading, I think you room is plenty big enough for a great switching layout. Your choice of cars are easy to find and very affordable. and easy enough to convert to KD couplers. Although I only have Static, modified 0-8-0 kit. I cant comment on how they run. but I have seen the Casey Jones and the American run and they seem to run ok. My concern is the track, the old original Atlas and Rivarossi track system hasn't been made in years and may not be compatible, with todays scale loco's and cars. A 24" Radius is tight ( Its like trying to use a 12" R in HO) and may limit you in the future. The current Atlas track starts with a 36R curve and a variety of straights. the #5 switch would be your best bet, and the also make a Y switch. I have been doing 2 rail In S, O, and G since the 70's and if you have any questions send me an e mail..