I've been through one, but it was—IIRC—a cat 1 or 2. (It was...
A long time ago in a galaxy far, far away.... ? ) Out one day, back in a couple days later. There was some structural damage, windows, etc.
Also been through a couple
Nor'easters in New England.
We also survived the Great Ice Storm of 1991, which left much of the northeast without power, phones, cable, etc. for a month in some places. We had gas for HW, and a woodstove, and put 2 families up for 2 weeks until they got heat & lights back on. Spent the days on cleanup, generator shuffling, and foraging firewood; and the evenings playing board games by candle & Coleman light.
But I got a crummy T-shirt! ?
I still think the lighting is optional; it takes a while (weeks to months) for MBD to set in, and if practical to take the cham outside for some natural rays in the interim, he should be fine—even for a few weeks.
But it's still up to each person's comfort level. I was thinking in terms of priorities, but one's gotta be able to sleep at night and look themselves in the mirror in the mornings. ?