I don't see much realistic prospect of reliable reception from Baltimore or DC except as an experiment unless you can hit the trifecta of a great location, the right equipment, and a bit of luck in have an obstacle-free signal path out in front of the antenna. I'd give DC a bit better odds, but B'more would be very poor.
I'd go with a DB8e plus a 10-element high-VHF combo on a rotor with an amp like our Juice. You probably don't need the preamp for Norfolk or C'ville, but it's needed for the stuff up north. You *might* get away without using the rotor to re-aim to the south and southwest as there will be a certain amount of reception off the rear of the antennas when aimed the opposite direction, but plan on a rotor just in case as antennas perform far, far better when aimed directly at the signal source than when they're not.
You can use the tool on this page
https://www.tvfool.com/?option=com_wrapper&Itemid=90 to pinpoint your rooftop in satellite view, turn on the lines, then examine potential signal paths for trees and buildings. If your location happens to have the oblique angle view in Goggle's maps available, make sure you use only the overhead view for primary decision making while using the oblique view only for alternate views. Please note that the 45° view is the default satellite view if it's available whenever you zoom in. You have to turn it off manually for a straight overhead.