My 9 year old son and I are planning an O guage layout. We have an area about 20 feet long in my shop to build benchwork about 3 feet out from the wall. We can also build off this with a couple of 4' X 8' areas. Is this enough space for a good O guage layout? We have seen MTH DCS in use and liked it. Is this a good system? Is Gargraves flex track good for beginners? Thanks for any advice!