He asked for another $5,000 for kitchen cabinets but and windows.

The cabinets have been bought and I will be installing them.

You might have rehabbed it and renewed the age of the asset now, but if you hold the property for another 20+ years, you will have to put in those capex again, so you can back out a theoretical monthly capex to be "escrowed" from your CF if you will... for me that number comes out to ~220 a month for a 1000 sqft 1 bathroom ranch home, which covers roof, gutter, HVAC, hw, appliances, driveway, flooring, plumbing, windows, interior/exterior paint, cabinets/counters, siding, foundation, garage/fence, landscaping, electrical, and other components, basically a lite replacement cost calculation.

Most bullet proof rentals was a bundle of 40 section 8 houses on one property in Hattisburg MS I offered on way back whenConcrete floors with Asian style drains in the bathroom floors and one in the main living area and cinder block walls with just paint.. concrete counter top and stainless kitchen cabinets like a restaurant.. 

The Headaches - Kitchen Cabinets, Plumbing Problems, Etc.But not all is well.

The wall cabinets (upper cabinets) are much easier to install because they run along one metal rod.

No refrig unless it is a built in with the cabinet finish on the outside.

(If you like the post make sure to hit the VOTE button so I know I am not just doing this to keep myself busy:) )Anyway, rehab costs of the interior of a unit range between about $3000 for Carpet & paint, cabinet refinishing and new Formica counter tops.You can easily take it to over 10K if you want to put in tile, replace all cabinets, add stainless appliances, square decora switches and plugs, put in granite counter tops and rebuild the kitchen fluorescent tube box into recessed lighting and put in a new bathroom. 

Compressed wood cabinets which are now being replaced with real wood because they are literally falling apart with time. 

Purchasing a trailer to haul trash, appliances, cabinets, etc has saved me a ton of time and money.