How big of a room do you need for a healthy NEET?

I'm trying to work for a couple years, saving as much as possible to achieve FIRE and return to NEETing once for all. I got two options now. Work for 3 to 4 years, then live in a 170 ft2 apartment with around 160,000 USD. Or, work for 7 to 9 years, then live in a 250 to 270 ft2 apartment with around 250,000 USD. The first option allows me to work fewer than half a decade for my entire life but I would be in a much more insecure spot financially and I'm not sure if I can keep myself sane living in each a tiny space for decades. The latter gets me a better living space and more leeway of spending but I probably have to retire at mid 30s which I absolutely despise. What's the view on that from my fellow neets?