Need Help With Remodeling A Basement?

I'm thinking of renting a friends basement. It needs a lot of work though, I'm a very organized, neat freak person and the basement is a train wreck. The bathroom doesn't work, there's a couple doors missing, everything needs painting, tiled, and carpeted. It needs also needs new cabniets. Plus the BIGGEST problem is, we seen a snake down there a couple weeks ago, and I have no idea how to get it out. So all in all, what i need to know is how much/how long do you think it will take to get this place ready to live in?? Should I ask her if I can get months free for fixing it up?? How do i get rid of the snake? PLEASE HELP ME..I'm going crazy.

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