I was always fascinated by some of the offices in Zurich having a large glass wall, with worker's desks and computers next to them. Almost as if put on display, "see we are working here".
It depends on lots of factors. Under age of six they have decent chance to grow it out, but doc should check for other conditions like missing some breathing while asleep etc. Also depends on risk avoidance of your doc in general.
I didn't do the math, but know people who did and got that the initial deposit is a real game changer.
Assuming we pay the same for mortgage and rent, who wouldn't want to pay rather mortgage?
But remember, to pay the same, there was a huge downpayment. If you were to invest that rationally, long term returns could be worth it, even while paying rent.
OTOH, rational investing (in a balanced fund portfolio) is hard, and mortgage forces you to save.
Using pure red light for the night is a good idea, since it doesn't decrease our eye's ability to see in darkness. That's why it is used in submarines too (if the electricity is cut, night vision of the eye is already fully functional).
A bit more detail: the rods in our eyes responsible for night vision need ~45 mins of darkness for full adaptation (though some night vision is achieved after a few minutes already). Light disrupts this adaptation - but not red light! So with only red light on, both the night-vision rods and the red-sensitive cones are active the same time.