How can I re-write this sentence?

This is for a cover letter. :\

I am writing an opening sentence for the second paragraph, before I begin to talk about my work experience. Here is what I have so far and I'm struggling with the best way to write this:

1. My professional background has prepared me for the responsibilities of this position.

2. I strongly believe that my qualifications match the needs of this position.

3. I strongly believe that my background in technical support has prepared me for the position.

4. I strongly believe that my background will help me to meet and exceed expectations at your company.

5. I believe that my skills and experience will help your company to achieve a competitive advantage.

Which choice is the best and how can I improve it? Thank you.