Hi Astrid,
Yes, I think I will go ahead with the treshold reading. If the energy enters the house only when the door is open, the reading should be relevant only when the door is open

I am really rusty on the FS, as I abandoned it in dissapointment a couple of years ago. But now I think I better use everything I have in my arsenal, as I have a lifelong project underway.
I have to change the mountain, because I have only disaster stars in bedrooms, and power and abundance in bathrooms.
I will have to use a hexagram at the door regardless, as the new SE1 will put illness in my front door, but I think this is the only configuration logistically possible to remove illness from where the beds sit (there will still be disaster in the bedrooms, but not in any bed area), and it also gives power and abundance to the beds.
I do not want to move because this house is in the middle of a natural park, and it has a perfect location in relation to water, mountains, fresh air, and privacy! so I will work with what I have now, until I can do a major reno next year...
Thanks a lot!
Lucia