Hi, and welcome to the hobby. You have come to the right place to gather information and help with your new pastime. You might find that your new pastime turns into your new passion.
The first thing you need to know is that you are president of the railroad. You can do what you want. This looks to be a fun engine, and you can run whatever you'd like behind it. I have a Reading & Northern blue LC+ Pacific, but there are no properly sized matching passenger cars. So, what I run behind it are the silver postwar 2400 series passenger cars. As far as I'm concerned I can run these cars behind any engine. For me "Lionel Lines" is a legitimate road name. If it isn't for you then that's great because you are the president of the railroad.
However, I do like to run matching trains as well. You need to keep sizing in mind. As Jim R said these are not scale engines. I run both scale and postwar sized trains. Just not together; even that would be too much for this president.
That engine in real life ran both freight and passenger service. Though, it was primarily a passenger engine.
The bottom line is: have fun.
Alan
