Bryan Park from the longs/shorts is a good afternoon. Loreilla from the long/shorts is another full afternoon. The Grange (sunny side and dark side) might actually be shorter than either of those courses.
While I believe the Grange is a fantastic place, a lot it is the atmosphere at the VA Open or mothlies, so just going and playing it doesn't capture everything. They're all good courses, but if you had to leave one to come back to, I'd say The Grange would be the one, then come back for a montly or the VA Open. Get the whole experience. It'll be memorable for sure. Much more than just playing a round by yourself or with a few people.
Loreilla is a great course, make sure to play both long and short as it does change many of the holes to something totally new and challenging. If you can only play one set at Bryan, play the Blues/whites. The two water holes have a white marker crossing the pond.
If you're playing just while coming up Tuesday, I suspect you'd have your hands full to play more than Bryan/Loreilla and perhaps 1 other closer to DC/Maryland.

Some great courses around though, so have fun!