Delaware wouldn't be my first choice for a place to buy a home in regards to fishing. All I can tell you is homes are substantially cheaper in Kent and Sussex county as long as you aren't near the "beach". The traffic is also a lot less further down south as long as you avoid the routes the beach travelers take on the weekend.
I can't give you any advice on buying a fishing related home in Delaware. I personally would look in MD before DE for a place to buy for fishing. There are alot more water front homes on nicer bodies of water that aren't the "beach" with the exorbanate pricing.
2008 Native Ultimate 14.5
2014 Hobie ProAngler 12
2015 Coosa HD