Congratulations!
I recently moved here, too, so I can’t help out too much with knowing barns in the area. Real estate and rentals are very expensive here. I’m a bit farther west in Hampstead.
Talk to a realtor. I met mine 3 years ago when I moved here as a singleton looking for an apartment and bought two houses with her as my agent. She’s not a horse person but is very honest and low pressure. PM me for contact info if you’re interested. She can set you up to get the MRIS listings that meet your criteria and take you around to see the ones that you are interested in. We’ve drug her around many a field and barn!
And when you are settled in you must come fox hunting!
Check out Maryland Saddlery while you’re here. Get lost on the back roads around it. Drive down Shawan Rd, drive past Sagamore Farm and up Falls Road and past the Green Spring Valley Hounds kennel on Mantua Mill Rd.
Then pick your jaw up off of the floor.
DH and I picked this area because it was more the most affordable thing we could find within a reasonable commute to the DC area without going too far west. I didn’t even realize how lucky I was to be in such an incredible area until after we had moved in!