I would rethink Mt. Washington if I was you.
It is a nice neighborhood but it is in Baltimore City.
When I was looking for a place in the Orthodox Jewish community which is party in the city and partly in the county I called my car insurance company. Two addresses just one mile apart, one in the county and one in the city, and the city made a huge difference. My car insurance would have gone up by a little more than double.
In addition to car insurance, if you think you might buy instead of rent you will find that property taxes are about double in the city and the city has a number of nuisance fees that the county won't have.
Depending upon where you live in the city those costs may be countered by slightly lower rental/real estate prices, but Mt. Washington is relatively expensive and no less than a comparable area in the county.
You might want to consider some areas in the county that are near Mt. Washington. Towson is just a little up the road and the older parts have a similar feel. Pikesville is only about 5-10 minutes from Mt. Washington. Owings Mills is just a little futher away than Pikesville and should be just a little cheaper than Mt. Washington, Pikesville and Towson.
If you are set on Mt. Washington be sure to check on your insurance rates, taxes, and fees before you move so there are no surprises. If you know what to expect and you are fine with it, it is a very nice area to live in.