Congrats and nice job. I've basically made a unit train of about 45 B&O hoppers in N scale. This is a lot of time and effort but very rewarding. In some respects the printing is the easy part, the painting and decaling is just a lot of repetitive work. I put some "easter eggs" in a couple of my cars, hope you did too - things like some upside down numbers and in my case, a single C&O hopper in the B&O train.
Bob