Contractor breach of contract

[Chris Hart]

Hey everyone! love all the help and support this site offers!

 I Hired the wrong contractor to finish my basement. The long and short of it is, he is way behind (7months) and only halfway done with the project. The work he did is shotty at best. I have an inspection tomorrow where I plan to point out all the issues I see with his work and plan on using that date as the day I noticed defects. According to our contract I have 20 days to write a letter with the defective issues I have found (inspectors write up). I would like to include in the letter that not only do I expect money back for the work he did not finish but I would also like to have another contractor finish the work because I don't believe he is capable. According to our contract he has 10 days to respond to my letter. 

Looking for any advice.

Thanks,

Chris