Washington DC - Pohick Bay

[jkh]

Planning a trip to DC March 29-April 3 with wife and daughters 11 and 14. We are wanting to see all the sites and are trying to decide on taking the pop up camper and possibly staying at Pohick Bay, or staying in a motel. We enjoy camping but being from FL this would be a very long trip to a unfamiliar place to us, and we are not going to just camp as usual but would like to save a little money by camping if we could find a convient place to stay while in the area.  We would need electric hook-up.  Any advice from those familar with the area would be appreciated. Also have heard of Cherry Hill Campground but with mixed reviews. It is more expensive and worried about noise.  Would not be against a motel if anyone could offer affordable-safe-convient suggestions.
Thank you,
Kirk