On a prototypical note, these orange and skyblue EL reefers and box cars saw specialized service for a I believe General Mulls Cereal Plant that was on the EL line.
Now Scoobster, I'll throw another idea into the mix. I have the same loco and am very happy with it. I now run my entire layout with DC power versus AC and am very happy with the change and will not go back. These lower end DC can motored locos run much much better with DC current. Even the ones with the curcuit boards that allow them to run on AC: I remove the circuit boards and see a decided improvement in locomotive speed consistancy.
With my Cannonballl loco, I added a separate headlight, much weight to the loco, added a custom made traction tire, added new details, repainted the loco and tender to a custom 2-tone Lehigh Valley scheme. I also added a mechanical Sound of Steam tender. These tenders don't work that well as is... you need to remove the sound cylinder and then using a Dremel, grind down the two openings in the frame where the sound cyclinder goes. Once you do this, add some weight to the tender and repalce the traction strip on the cylinder. Now your mechanical Sound of Steam tender will work flawlessly even on tight 027 curves.