That stuff doesn’t look like surfboard resin, from the description. The catalyst appears to something other than MEKP.
I have glassed in the basement of a house, but would not do it living space. Small ding repairs? Sure. Done that plenty.
As to the other link about the fire in SC? If you take all the necessary steps and pay attention to what you’re doing, fire is really no consideration. If you want a really nice fire, mix acetone and MEKP, and ignite. Works like a charm.
I wouldn’t even think about using polyester resin in a habtitation. I speak from experience. I did a poly gloss coat once in our apartment and my wife just about threw me out. Almost ended my board making hobby…
Actually I meant “Golden” as in “You’re good to go,” or “You’re a happy camper,” or “You’re on cloud nine,” or “Happy as a fat rat in a cheese factory,” or…