Guys, begging for help here :| Taking up old tile in my kitchen condo that I just bought. The main reason is the install wasn't very good, and the tiles had lippage and uneven grout lines everywhere. I'm able to take up the tile without really damaging the backerboard underneath, just have some of the thinset that would have to be chipped away / sanded down there. I noticed the floor has a dip in the center, looking at roughly 3/8". There's also a bulge in the backerboard under where the stove would go. I'm looking to put down vinyl in the kitchen but understand everything telegraphs through it over time. Im' not sure what I should do here, I've got one area of the floor that's got a hill. one thats got a slope. I don't really want to put leveler on the entire floor because it would have to raise it 1/2" to 1" based on the height of the hill, and the weight is likely a concern on the 3rd floor. The kitchen is 8' x 8' Any recommendations?

We had a cleaner leak on some of our tile it looks like the tile was bleached. Is his something we can fix? Will it need to be replaced? Help would be greatly appreciated.