I think we all have responsibilities that need to be addressed as life DOES get in the way.
I also think that 36 hours quick host would fill the bill with the occasional extension or you will start having players losing interest at this stage.
You might look around at the numerous 'Casual games" that start out 49 ours and go up from there in the future, might fit your lifestyle better. I remember (WOW has it been that long ago)when I had small children and if your sharing responsibilities (and should be), it really can be a chore just to stay awake long enough to give the turn its due.
My kids are grown and my youngest Grandchild is 8 and oldest is 20. (no I'm not that old, I had the fortune, or misfortune depending on how you look at it) of starting while I was just in my first year in college.
So remember that when you guys are beating up on an old man...respect your elders!!
