Thanks again, J-A, for your help and anyone else who'd like to offer some advice, please.
I feel very silly doing this to be honest, but I want to make the right choice, I am just feeling decision-overloaded. I can't see the trees for the forest, so to speak. There are no reveals so all tracks, etc will be mounted on the wall or architrave.
I've taken photos of the windows and sliders and will break them into upstairs and downstairs. They are real "lived in "shots; nothing here is staged, believe me.
Downstairs, panning the room in a clockwise direction:
The triple slider door which is our back/side entry door from the driveway/garage and looks straight into our open plan kitchen/living area. Privacy is needed for night time, not so much during the day.
From the kitchen to outside
Past the slider, along the same wall, are these windows and fireplace. They look out to the garage (south facing) so privacy is not a concern. The architrave was cut around the pelmet, an interesting detail to considering for window coverings.
Double set of sliders out to alfresco/entertaining area/yard (privacy not an issue but they face mainly west but do get some shelter:
Large windows facing north/NW (privacy not a major concern):