One install and put down some plywood
to faciltate movement in the Attic.
Now Install Turbine vents on the end
of each wing. In the logest hallway
coming off from the front door install
a full house ventilation fan with either
thermostat control or manual switching.
The reason for the access to the attic
is so you can place covers that fit over the turbine vent wells this will facilitate the blocking off of the heat escape in the winter time. Foam tape and wingnuts on studs will suffice.
Enjoy in the evenings when the humidity
is next to nothing there is nothing
better than the cool breeze being
pulled in off the desert.