Walls and Ceilings - Redrywalling a lath and plaster room?

So, had a new customer call me out to their home in the country. They wanted me to come and look at a room they want drywalled. I'm a painter, but I've done a fair amount of drywall/mudding/taping over the years. Had no idea what I was going to see. She's wanting to sell the house.

Got there and it's a fairly large bedroom. Old lath and plaster walls that are covered in ancient wallpaper. Lots of huge holes in the walls (not sure why, didn't ask), wallpaper coming off in sheets. Plaster looks in rough shape in general.

She asked if I could just install the drywall right over what's there, finish it and paint it. I told her, I didn't think it would be a good idea as I would expect the joints to split within no time. I told her that if that was the way she wanted to go she'd need to find someone else to do it.

My suggestion was that we'd need to remove the lath and plaster down to the studs, and drywall from there. Inso doing, we'd need to remove the old baseboard and door trim and replace obviously. As well, the electrical outlets and switches will need to be moved to accommodate the new drywall.

When I explained my thoughts to her, she seemed to agree that it was a good idea and made sense. For some stupid reason I'm sitting here trying to decide if I gave the right advice! I can't think of any other options.

Anyone who's done this before have any other ideas/concerns?

Use long cap headed screws to hold the loose plaster, rock over with longer screws (no vibs), tape, etc. Door trim problems, maybe extentions on jambs, head. Extender boxes on elec. Or........ like you said. Be safe, G

I agree, I don't think there would be any real problems with laminating the plaster with drywall but the drywall must be secured to the studs. removing, altering and reinstalling the woodwork would be the biggest challenge.