Questions: Luxury vinyl and kitchen upgrade

[Li Kia]

hi All, I would love some input. My tenant will move out in 2 weeks. I am thinking about  replacing the floor for the common areas, bedrooms, bathrooms and private hallways for my rental in a nice neighborhood. The floor guy suggested me using luxury vinyl (I think also called SPC) for all these areas. Is it ok to have vinyl planks in bathrooms?  
The entry hallway (left to living room, straight to kitchen, right to private hallway leading to bedrooms and bathrooms) has tiles - same tiles as the ones in the  kitchen.  he suggested to leave it since it is a high traffic area. Should I replace tiles with the luxury vinyl to look nicer (extra $1k to remove the tiles for such a small area, and vinyl would not be durable) or leave the tiles?

My kitchen is in pretty good condition, but has telecom ter top. Should I replace the cabinets and install slabs? I was told my unit was dated. Is it worth it to upgrade it? Expensive to remodel a kitchen!