It's no secret really, you are going to get a lot of bids for this project and will have to balance price to quality to make the best decision for you.
I don't know any of these other writers so cannot tell you that my skills outweigh those of the others, but what I can tell you is this. If you choose me to do this project with you, we can set a specific Milestone to meet, and if you are not completely satisfied, you can walk away and find someone else. This is a no risk offer to you, and you can see what you are going to get before you spend any money.
I look forward to hearing from you.
Thank you,
John McFall