We try to avoid ceramic tile when possible due to the time it takes, kitchen backsplash is the only exception.You can buy okay LVP at big box stores, but I usually prefer materials from a flooring store, better value.

A much more costly option then since materials/labor will naturally be more expensive, all new granite again, all new backsplash, etc. 

Not all sq ft in a house costs the same.Go to your local building supplier, go up and down the isles, and get actual prices for material for kitchens, cabinets and countertops, floors, paint, basic lumber and trims, plumbing fixtures, electrical fixtures. etc...You usually can get estimates on labor from that same source. 

I think that is probably the easiest way out but I was trying to figure out a way to sign a lease with them to lock it in so I don’t have to advertise anymore 

They will either be demanding or can just barely afford it now and you will run into payment issues...PASS....If you are getting low traffic, then its often advertising.

I tend to approach them with the "if I were the craftsperson that built this place, what material would I use, but maybe what new way could I use it?"

That really means self managing to rise to the level of participation needed (please note active participation is a lower standard than material participation for Real Estate Professional status).

National info: National Association of Home Builders NAHB.com, shows that construction materials 2019 price increasing 1.5%, compared to 1.9% in 2018.

This can ease the cost of paying for 2 housing payments during the rehab.Allow 30-60 days closing time for the loan.Most 203k consultant's pricing is for builder basic materials.Getting permits and some materials can delay the process.

However, some folks in my neighborhood had issues with the exact same build materials.What material is the foundation?