The issue has specifically been around the power flusher/bladder.

I also noticed you didn't factor in any utilities like water (normally owner paid), gas or electric.

She bought it from an older lady whose grandson had power of attorney. 

Contractor should be licensed (especially for framing, electrical, plumbing, hvac, roof), you should ALWAYS have a contract and bid in writing which details the scope of work, costs, timeline, payment schedule, insurance requirements, disclosures, etc.Why would you return his tools if you have paid him more than the work he has performed?

Its so painful to see my cash lose purchasing power every month so im feeling the pressure to get in quickly.

I made some dumb mistakes when I first started (didn't go on BP and learn first), so based on what a friend was doing in CA (my property is in IN) I told tenants they pay for gas and electric but water and sewer was covered by me (water is separately metered for each unit).

In my area, to consider a room as bedroom, you need to have closet, either built-in or standalone (some Cities prefer built-in only), should have a  HVAC vent, but no water heater and no electrical panel in the room. 

Separating the utilites for electric, gas and water for each building to their own individual meters was quite the undertaking and more expense and time consuming than expected.

Completely remodeled it, new roof, plumbing, electrical, ac ducts and units, windows.

Is electricity factored in?