This home is an early 80's Kingsberry kit home and I'm pretty sure that the trusses strech all the way across the width of the house.

If the trusses go all the way across, the outside walls where the trusses rest are load bearing. However, depending on the design criteria, some trusses are installed with a center bearing wall also. For example, if you live in a high snow load area, you may have at least a partial middle bearing wall. In Florida, not needed.