When we moved in we noticed it had not been cleaned hardly at all - kitchen cabinets had well established spider webs with several dead roaches in them, floors turn your feet black from how dirty they are, etc.

I have also thought about redoing the kitchen cabinets, trying to fit in a dishwasher, etc. 

DecksMaster BathroomKitchen appliances and cabinets to be repainted. 

Kitchen RETRO Unique Appliances in Tiffany Teal Blue, live edge countertops shaker cabinets on bottom open concept wood shelving.

Stuff like flooring, cabinets, bathroom fixtures, etc.

Should I just reface cabinets, replace countertops or go major and remove island (move plumbing) replace all cabinets redistribute appliances?

You need to deal with appliances and fixtures and cabinets and closets.

Use the high number for flips and low number for rental grade stock. 3) Ask contractors - if you have a place or two yourself you can call someone out to say "I am thinking about upgrading my XYZ, what would it cost for granite, tile, and shaker cabinets in this kitchen?" 

Days of cleaning a 10 year old carpet and adding handles to cabinets to get top dollar rent are gone. 

When I see a rehab property I am looking for repaint, reface cabinets and paint cabinets.