I've gone from bright white to a duo-tone scheme that adds a more modern touch to these old units.I guess I'm more asking if upgrading floors from cheap carpet to composite or laminate floors or upgrading the cheap particle board cabinets be wasted effort in a class C property?  

While more rooms can be good and make the house earn higher rent it also generally means more folks in the house which means more opening and closing of doors, more flushing of the toilets more fingers on the cabinet doors which all equate to more wear and tear on the home. 

You can easily add a coat of paint yourself, change hardware on kitchen cabinets and you'll be surprised at the difference that can make.The reality is in many places the cost of rent vs a mortgage are not that different. 

Flooring, paint, counters, cabinets, fully furnished the traveling nurse side.

Ceilings are good.Needed items: insulation, drywall, kitchen and bathroom cabinets and counters, toilets, sink, shower stall, finish electrical, fixtures, appliances, flooring, interior paint. 

Property A has very frequent repair history (30% rent went into repair last year), the largest ones being "new LVP", "kitchen cabinet paint", "New Gas Furnace" and "misc repairs" (I can't tell what it is from the report).

Tenant may have dish installed in back yard on pole only.2) Do not drill or tape anything to kitchen cabinet doors.

Painted kitchen cabinets and vanities to save money.

I paid $115K cash and put about $15-$20K into a remodel (flooring, cabinets, counters, bathroom vanities, increased the size of a shower, retiled the tub/shower).

It also depends on the space as the cabinets might not fit.