I personally wouldn't have made it in 4' sections. I would have placed all the vertical poles and then run one wire through the whole things as it was a 300' spool. Other then that I can't thing of anything that Adriatic didn't already say.
But I will say I love your idea and the look. I may just steal it for my table top layout to keep the locomotives from dropping to the floor. What size dowel rods did you use? Could you share a sketch of hole locations and dowel spacing?
