Can the drain pipes in my kitchen soffit be relocated into the wall?
You're dealing with some major renovations. I don't think we would be able to answer that accurately just by looking at pictures. The easiest part would be rerouting the electric cables. Junction boxes could be mounted to the joists but the boxes would have to be accessible forever. The plex plumbing would be a nightmare and the drain piping almost impossible as you've got pipes going through the ceiling at that point. The AC duct really appears to have nowhere to go. All of the facilities you want to move will have to go somewhere so some walls would have to be wider and you'd have to loose a closet or two. You're best bet would be to get a few professionals in there for an estimate, if it's even possible.