I would like to install ceramic tile in my kitchen, however i don't know what to do with the existing floor. I currently have a linolium floor layed on 5/8 plywood underlayment, on top of 1/2 inch plywood sub-floor. The floor is now level with the adjoining hardwood floors in the LR, DR and FM. Do i go over the existing floor with 1/4 plywood and tile on top of the plywood? Or do i go over the floor with backerboard and then tile? Add the thickness of the thinset and tile and now i'll be be a 1/2 inch or so above the adjoining floors. Or do i rip up the existing linolium and underlayment and put down backerboard over the sub-floor? I would like to avoid doing this since the cabinets and appliances would have to be removed to do this. Any expert advice out there???