KillerKween19 to your second request on your list, if you want to edit those lots you can do so with the cheat bb.enablefreebuild which doesn't require testingcheats true to be entered first (so it can be used by console players without disabling console achievements). Be careful to save a backup first incase you edit something that's required for career/school tasks. So I'd avoid doing anything much to jail cells, interrogation, finger print station for example. As long as you make a backup you can revert back to that if anything breaks as a result of being moved or edited.
Also, you can make shops with the Get to Work or Business and Hobbies packs. You can build and manage a store. You can sell harvestables, Nectar, preserves but that might not quite be the kind of grocery shop experience you're looking for.