hey, david 1st things first. hire a demo company experienced in this type of work, in typical resturant construction quarry tile is set in either thin set or a mud bed which is similar to concrete and is typically 2" thick, there is usally a layer of waterproofing membrane between the thinset / and mud set. if the quarry tile was set wtih thinset youre in a better position a than if it was set in mudset. mosiac 1" tile can be set in the same manner as quarry tile. i suggest chipping (electric chipping gun) a small test area to be sure, in either case this isnt a project for the novice or weekend warrior and its going to be expensive, in Boston this would cost 3k to 5k , united rentals has electric tile strippers that would cost 100 plus aday to rent.sealing and stainning should be as close to the end of the project but before any equipment is set in place. home depot sells a great product called ramboard it comes in rolls and is very durable..i use it all the time over finished floors.i build resturants for a living...kitchen floors are typically bulletproof, Chris

Skim coating the wallpaper with drywall mud is another option, then you could paint over that with water based paint.

@Jd Martin No need for mud slingin.'

If you don't have much money, you may want to try wholesaling, just beware though, as many of those off market properties are undesirable and money pits.

Adding drywall mud, a coat of primer, and a coat or two of topcoat add a lot of weight to the surface.  

I would get a hopper gun air mix my mud blow it on the wall looks great I have work in Bossier city remolding in that area it is your best bet

Nashville and Inglewood was highly undesirable several years ago, but I grew up there.

trying to only provide honest, constructive advice to the OP and not trying to throw any mud, I think there is a reason why ke and exp agents have a generally poor reputation.

Properties that are all-electric are considered expensive, inefficient, and undesirable vs those that have natural gas for heat.

Pit bulls are undesirable for their severity more than their frequency of bite.