Joop,
There is no simple way to align a point based family instance to a Dynamo CS. (the same way you have to take a few steps inside the Revit UI: place, offset, rotate)
Luckily for you, Dynamo 0.81 introduced a new node called “FamilyInstance.SetRotation”. Prior to that it was necessary to access the API every time you wanted to rotate something.
With its help and by splitting the process into steps, you can try something along the lines of this:
