Given ranch style home

I was given a 1,900-square-foot ranch-style home built in 1980 by a relative. The house was partially renovated about 13–14 years later, but in the meantime, it has been a smoker's home for the past 15 years and needs some work.

The flooring is unfinished hardwood throughout, except for the kitchen, laundry room, bathroom, and one bedroom. However, the hardwood is dirty and scratched as are all the walls and the ceiling. Additionally, the plumbing isn't pitched correctly, though all the plumbing is located on one side of the house.

On the plus side, the home comes with 100% equity. I'm young and trying to figure out my best move. I really like the house it has good "bones" but with the rising cost of living, I could use some advice on a full renovation. Nothing has been replaced since it was redone in '92-'93