I can help you plan a layout for that space. I've designed and helped build several OGR member layouts. Whoever helps will need the following info:
- sketch or diagram of room (length/width, obstacles like supports, electrical panels) doors/entrances, windows.
- Desired track system (Fastrack, Gargraves, Atlas, etc) - effects design choice of curves, switches
- Desired operation: loop runner, point to point, single line, double or triple main line, industries
- Flat or grades, tunnels, bridges (where do you want to model?) Mountains or flats
Check out the South Fork layout I helped design and build: