Thanks for the suggestions.
With the Exped or Big Agnes what would you do about preventing cold shoulders? It doesn't seem like the pads would be wide enough by themselves (even the large versions that are 25"-26" wide) and adding some sort of foam wing would add more volume to the setup.
What do you guys think of the air insulated type (Neo Air and Air Core) pads in a hammock? It doesn't seem like they would be nearly as effective as the traditional thermarest that has some foam in it. I'm sure the air pads work fine on the ground but in a hammock when they are compressed and contorted it seems like the wouldn't work very well.