That looks like a really nice car for the money, very similar to my '80 240d which is also a 4 speed.... Not my favorite color though. MB did offer some peculiar colors in that era. Mine is sort of an Army green which personally almost turned me off enough not to buy it. I do get a lot of compliments on it though.

1900 miles in a 240d would take some patience but I would think you would get home sometime on the 3rd day, depending on how many hours per day you want to put in. You could always put in some sight-seeing stops along the way and make it a very pleasant 4 day trip by staying off the interstates and stick to the US highways. The interstates are not much fun to travel on, and generally not very scenic either. US highways (not state highways) are usually very nice to drive, almost just as fast as Interstates, a lot less congested, a lot more scenic, and would make for a much more memorable trip... my $.02