7) I forgot to check for a backup camera. Does a 2013 SV (base SV if that exists....) have a camera for reverse?
8) Does this car have the 'charge to 80% feature'?
7: The backup camera was an option, not standard, in 2013. There are even SLs without it that year, although most 2013s seem to have it. Check. (I used to refer to "Base" SVs as a better alternative to the S, but I got yelled at too many times for it, and stopped.)
8: Yes, it has the best version of the 80% charge feature, in that it has both timer and global settings for it. That means you can set the car to charge to 80% unless the timer override is pressed, in which case it will charge to 100% that time.
2) Does it have the same crappy headlights that are on my 2017 S?
No, those are still on your 2017 S.
It does have the same kind
of halogens, though. There may be car to car variation in beam quality, though: I never found anything wrong with the Low beams on my 2013, just the High beams.