Everything you're thinking of uses a combustible fuel and apparently you have no ventilation. You're just asking for trouble. Either go electric or wait till spring.

I've used them all - propane radiant heater, propane flamethrower and kerosene flamethrower. Short of a proper heating system the electric construction heater was the best.

Those flamethrowers are usually used in contruction sites that have tons of air leakage. Their purpose is not usually to keep the area warm but rather to keep things like concrete and drywall mud from freezing while it cures. You'll rarely find them in fully enclosed spaces.