Yea, I'm thinking that extender might be the best way to go in order to get a nice full signal all throughout the place. It is mostly up and down distance, so we'll see. I think I am going with the original one I put up here...
http://www.amazon.com/Linksys-WRT160...BMFEVNW9MKT5P5
But am also thinking about the Belkin:
http://www.amazon.com/Belkin-F5D8233.../dp/B000RMPP5Q
Still comparing reviews and such for now...
EDIT* Put in right link for the first one...