It needs to be cleaned.

Will be fixing the all the hardwood floors, replacing windows, fixing the small cracks in the plaster walls, paint, landscaping, replacing the front stairs and porch surface.

Of course I'm going to clean it up really good and fix the major things before they start the move in process.

For example the cleaning costs.

Luckily, my aunt sold her house which was next door, and the same floor plan, for exactly what mine ended up appraising for. 

Adding new roof, all new split unit HVAC to replace window units and paint/clean up the grounds.

If he has a clean record, make a separate agreement that he can stay there from (date) to (date).

Is this easy to clean up and correct without taking too many things apart or will this require a lot of work?

Removing the previous tenants that hadn't paid rent or electric in years, new floors, new vanities, new toilets, cleaning the cabinets and shower to make them look new again and repairing all electric, windows, etc.

Removing the previous tenants that hadn't paid rent or electric in years, new floors, new vanities, new toilets, cleaning the cabinets and shower to make them look new again and repairing all electric, windows, etc.