I have some Atlas bumpers with lights on top, but they don't fit the Ross tracks too well. I'm going to build some out of Ross cross ties of which I have a whole bag just for this purpose. I'm very careful moving them into the sidings just for that reason... no bumpers.
Do you happen to know where you got the Atlas bumpers with lights? Or did you make them? If you made them, could you offer up a pointer or two on how you did it. I have been looking for these but haven't found any.
And BTW, looks like you are building a very fine layout, I have enjoyed reading your posts about it's construction. I'm sure it will be really nice!