How can something be through faith alone, and also by grace alone, and also through Christ alone? That is impossible. You have listed 3 things through which we receive salvation, which are all true, and yet you claim they are each the only thing that is needed by attaching the word "alone".
I totally agree that we receive salvation by grace, through faith (Ephesians 2:8). I also agree that it is only because Christ died, was buried, and rose on the third day that we have the opportunity to become a child of God. However, our acceptance doesn't end with simply believing that to be true. We must also repent of our sins, confess that Jesus Christ is the Son of God, and be baptized for the remission of our sins.
Sorry about that.
Rom 10:11 For the scripture saith, Whosoever believeth on him shall not be ashamed.