I just stopped through Kempsey several times in the last few weeks, whilst staying with friends in Cresent Head.
The proximity to the much nicer coastal beach retreats of South West Rocks (developing a nice tourist trade as a great dive site), Cresent Head/Diamond Head beaches (again, strong with surfing tourism), and the appeal of peaceful vacation spots within driving distance to either Sydney or Brisbane, is positive.
The removal of the highway is also positive. What concerns me are the socio-economic issues, and lacklustre local economy. After retail, there is little other industry. Farming and agriculture is tough because of the flood plain's unpredictable nature. Many farmers have had seasons of crops ruined by floods there. Levies are in place to protect the town itself but not the farmland.
That said, with the highway moved away, the town may benefit from this and economy stimulated.
Returns are great but I wonder about quality of tenant (particularly in South Kempsey where quality of tenant can be weak).