Sounds like a great day of sailing! In general if you are day sailing, you want to sail up wind at first. This gives you lots options. If you are down wind from your home port, your only option is to beat into the wind, or fire up your engine.
As others have mentioned in the Chesapeake threads, there is some current in the Patuxent. You might want to take that into consideration when planning your sails. You can find some useful current information at
Current Station Locations and Ranges