Some MD options for you.
I live in Baltimore and fly (rent) out of Martin State (KMTN). So, here are some options for you:
1. Tipton (KFME): I used to take lessons and fly out of here. Very nice non-towered airport between DC and Baltimore. Not much hanger space that I'm aware of, but plenty of ramp space. You'll be flying in and out of the SFRA, which is a pain, but manageable.
2. Martin State (KMTN): Very nice Towered airfield. Very quiet. HUGE runway. Outside of the SFRA, but under the BWI class B. I think they might have hanger space available (at least they did last summer, I haven't checked recently) as well as ramp space.
3. Essex Skypark (W48): A real nice small airfield northeast of Baltimore. Everyone I have met there has been real nice. As of this summer, they were building new hanger space.
4. Montgomery Co (KGAI): Never been here, but I here it's nice, but busy. Once again you are inside the FSRA.
5. Frederick (KFDK): Never been here, but it's the home of AOPA. It can be busy here, too. Outside the FSRA.
Hope that helps.
Jeff