Well, if you decide you want to give him a sibling but don't want to risk going through bad labour again, you could try to adopt. I heared it's easier to get approved when a couple has already had a child.
It's good to hear J is coping better, at least one of you can be less shaken up
I'm sure you'll be fine alone with your little one

Although I do think fathers should be allowed a longer parental leave, it's not fair to anyone...
I think I wouldn't want any visits after a couple weeks after birth, I'd be like, I'm tired, leave me alone, see ya in a year or so

A newborn is already overwhelming, especially the first one, then also having to deal with people... hard pass. I only have enough social battery to deal with my kid and my partner, and even he pisses me off. (Yes, I already chose my new-mom attitude, I'll be a pain in the ass, lol).