Drywalling over Plaster??

We are in the final stages of a very similar project. Our house was built in 1909 and had lath and plaster with drywall over that and fake brick over that.

Our solution was to strip it to the studs, rip out the floor and floor joists (most were showing signs of rot), rip out the ceiling and ceiling joists (ceiling was badly out of level). We ended up reframing the exterior wall and adding a stud wall up against one interior wall that had the studs mounted flat instead of on edge.

One of the most important things to remember is that you will be putting cabinets in your kitchen so the floor and ceiling need to be very close to flat and level and the walls must be plumb and square. I can gaurentee that in an old house, nothing will be level or plumb.

I have drywalled over plaster with considerable success in a 50 year old house. I have used 1/4 inch drywall in some cases, 3/8" in others. There is no reason to assume a priori that your structure is rotted or unsound (but you should try to determine this--if you are going to redo the walls anyway, punch a few holes and look at the interior.

If the walls are seriously out of line (and no reason, again, why they would have to be--I just finished working on a 130 year old place that had remarkably good walls (bad floors, but good walls), then yes, it will be a trial to hang cabinets and so on.

One more or less compelling reason to gut the kitchen is that you will be able to insulate properly. On the other hand, you may live in a mild climate where heating bills are not a great concern.