I've been working on some ideas for an American TL with its POD in the 1780s, so before Washington DC was chosen to be the new capital. I know that I want a new city to be created to be the capital, but also want to avoid the real location if possible. My favorite location I've come up with is Wilmington, Delaware, but the idea is that the capital should be more central than Philadelphia, so Wilmington clearly doesn't work. What are some other proposed areas or areas that could proposed, other than the OTL location of DC?
EDIT: Another idea I just had was possibly putting it where Salisbury, Maryland is located, on the Delmarva Peninsula.