The trusses are going in today and I got a birds eye view from the roof. The trusses will support purlins running perpendicular. We are using 30' PSL beams sitting on a 10' sill. PSL will provide more structural support than redwood. We are painting the beams white so it doesn't matter that they are PSL. They'll be exposed on the interior vaulted ceiling...but more on that later.