GatorPilot,
Welcome to UA DCA 320. I've been here a couple months. My two cents is to stay closer to IAD; but it's doable to stay near DCA (just know that traffic and Metro delays can be legendary in D.C.). BWI from IAD is a hike, but you should have ample notice for assignments there.
I've found reserve to be pretty easy and quiet. Some weeks, there might be a FSB assignment or two; other times, I'll go weeks without one. I haven't had a lot of short call either. If you request a trip for pickup that fits into your silo days, I think there's a good chance you'll get it. If you don't want to fly, put in for nothing and you'll likely sit. I've had a lot of long call. I live in base and wanted to be home a lot this summer; things worked out well. I've found Scheduling to be accommodating, for what that's worth.
Welcome aboard!