...My house is fairly large, and easily 200-250 feet from one end to another...

Are you serious? That isn't large -- that's gigantic. Assuming a rectangular shape with a 2:1 aspect ratio and your dimension of 250 feet being the long dimension, that's almost an acre and a half space if there are two levels. (62,500 square feet.)

Bill Gates, eat your heart out!

tanstaafl.

"There Ain't No Such Thing As A Free Lunch"