Usually people move the stairs to the side out here with full porches.

Another vote to consult with an architect. Once you mention changing the roof, you need to bring one in. Also, since it would be a two-story addition, there are enough structural issues that you’d want to get their input. (Could be $$$). Sound like other people have done what you want to do. Can you post some examples so we can see? (and maybe you could talk to them about any logistical issues or costs. My experience is that people love to talk about their remodeling projects...almost endlessly ... ;)

They haven’t added it on as much as they are built that way to start so the roof line is designed to go with the home from the start. We added a deck off the second story out back but it’s not covered. I guess an architect is necessary for the roof line though!

I can’t tell how much space you have on the side but you would need a lot for the porch

The porch would easily sit within our front setbacks for our property and the stairs woukd easily fit within either of our side setbacks as we already did a set off the rear/ side porch.