"Walls" between the living room and kitchen

The walls between the kitchen and living room will be much wider than typical walls because the right side will have the HVAC/plumbing/electrical chase from the basement to the second floor. That will take up about half of the wall. The rest will have a pantry/cabinet. On the left side there will be a built-in cabinet that opens to the kitchen. You can see the approximate size on the wood on the floor under the ladder.