FWIW, I would never consider running that length of car on 054". Too many dimensional conflicts. I can run them on my 0120" route but they look much better on my 0144" line.
I do have 054" but that is where my 60' cars run. The 60' cars look best on the 0144" curves.
I have found that just because I could do something it may not be the best thing to do.
Your call.