Wow...that was a very cyclic, zen sort of tribute to Severus! Almost as though Harry's life is a tribute to him. I did love the line about asking Hermione to ensure she always has a family member in school every other year...for free teacher's aides. That was clever.
I think this is much more how Harry would have been comfortable living his life for *real* than *Book Harry* if you consider the PTSD and his childhood abuse, I don't think his marriage would survive nor would he stay in a high pressure, hunt the bad wizard job. He would be much more likely to seek out the only place he every felt "At home" --Hogwarts. So, this must have just been a bit after the epilogue...