About total stealth: yeah, perfect, as in 0,(0)% emission isn't happening, I agree. But, given that the speed of light can be raised at least 438300 times over normal one (12 light years per day, under the assumption that the ship gets as fast as 1% local C)... It gives you 1.3*10^-4 degree as the maximum angle. Essentially zero. And it is magical cloaking if you cover the whole ship with it. Yes, some radiation will pass through, but so small an amount (1.3*10^-12 of the normal level of radiation if we go by
solid angles) that it's basically zero. And that's across all of the spectrum, including visible light. So, it's perfect in engineering sense, not a strict mathematical sense. It's cloaking because it works across all the spectrum, form radiowaves to hard radiation.