Shelves in place of kitchen cabinets where possible.

I can tell you after many years owning ,managing long term sfr's one should count on at least 35% of gross rents for expenses, as newbies often neglect to factor in consumption of roofs,mechanicals, flooring, cabinets etc.

This will give you a good idea of what finishes are standard in your market so that you can decide on countertops, cabinets, flooring, appliances, kitchen/bath hardware, etc.For calculations: Check out BiggerPockets calculators (including the rental property calculator).

These could be larger, chain link fence enclosures, or smaller closets or cabinets, depending on available space.

If replacing kitchen cabinets isn't in the budget, that I would paint them white and replace hardware.

As Devin said, it's all about the comps.In my market, you absolutely want the nice rain shower head and under cabinet lighting in the kitchen.

We are open to both depending on the number, but more likely a value-add type project (light rehabbing- replacing cabinets, carpet, paint, fixtures, that type of thing). 

A squeaky kitchen cabinet is not an emergency. 

Spray with a probiotic enzyme....let set for 3 days than ozone overnight with all cabinets open and air conditioner on to pull thru ductwork.

Just rip it out and start fresh.It woudn't even be a bad idea to refinish the cabinets throughout.