Help turn an idea into a product!! Copywriter needeed.

I am building and launching a new website application and I am in need of a creative copy writer.

I have a great idea, a development company but desperately need professional help building a marketable brand. What I am after initially is;

1) Web site wording, probably 2 or 3 pages of wording including, descriptions, use cases, benefits, why use our software etc...
2) Sales brochure(s), what this service is, and why you should use it - non technical!!
3) a little market research .... to ensure the above 2 points are well positioned and delivered.

What do I have to help? There are two other, existing competitor websites, who are providing almost the same service. Although of course I don't want to use their wording, my service has a slightly different focus and I want to have much better branding and product/service descriptions.

The process, as I see it and of course can change if you need it to, is;
1) I select the right copywriter to partner with.
2) I share the other two websites with you, so you can get a feel for the type of service I am going to be building.
3) You interview me, to get my view and ideas.
4) We agree what you will write and in what order.
5) We review until the work is complete.

The initial engagement is probably quite short, but will lead to a lot more work once my site is launched early next year.

So, please convince me that you are the right company/freelancer for me to work with and that you can help me build a world famous and award winning brand!

My selection process will be based on;
1) Your experience working on similar projects
2) Your flare to be involved in an exciting project at the ground floor
3) Your availability to start
4) the cost of your services, please suggest if this should be fixed price or hourly.