Hey Cam,
This is great. You got the model in and placed it and worked it into the scene really well.
My advice for what its worth, render another image of the same scene same camera view, with lots of bump, or some displacement. Then in PS put one over the other and mask out the parts that look better. So if the plants don't look good with RTO off, then keep those parts, but let the displacement of wood and stone wall, and the roof really come through.
Rendering twice is still the only way to get the best of both worlds in TG. But fortunately, we'll get a better option soon.
Anyway, the point is, that this scene just needs a little more depth from bump or displacement on the models.