Just to add,
Here in Florida, the single-story split floor plan is very common. Meaning the middle of the home is typically the main room and each end are bedrooms. The main room almost always has a vaulted ceiling for cooling with scissor trusses. In the average size home, the space between the scissor trusses is pretty much impossible to crawl through due to the presence of the main HVAC trunk at the peak and other mechanicals and electric. This arrangement makes running wire from one end to the other challenging, especially if you have a larger home. It becomes a real pain to guide fish rods over the scissor trusses and around said mechanicals, as they tend to develop their own sense of direction, the longer they get.
What I have done is used 2.5-inch conduit and carefully fished it from one end of scissor trusses to the other. The conduit won't bend like fish rods, and you'll have an easy future path for new runs. Be sure to feed the conduit straight cut first, with the flange following, otherwise it will hang up easier on the truss work and other obstacles.