I've never tried living independently, so I'm not sure if I'd be moderate or severe. I picked moderate.
And I have one comorbid which doesn't overlap with AS at all (PTSD) and probably impacts on my functioning almost as much as AS. (Though it doesn't impact as much overall - counting both positive & negative effects - because it only has negative effects.) My biggest areas of difficulty are meltdowns/stress sensitivity (which is mostly PTSD, though AS changes the flavour of it) and executive dysfunction (almost purely AS, but occasionally exacerbated by PTSD). I do have sensory issues, motor coordination problems, and a smattering of other things, but those really don't impair me much. My PTSD is currently mild, but has been worse in the past (though never really severe). Mild, of course, does not mean insignificant...