Man oh man those are some challenging concepts between the photobashed medieval scene and the cray-cray windmill house : ) Good luck to you guys! Hehe my vote would be for the well.
Think it would be nice with something other then SciFi, so here is two. I don´t know if these two are to much for four weeks, but it think medieval setting would be nice :) Source; http://shutupandwhisper.deviantart.com/