Hello there!
It sounds, from your description, as though you already have the content prepared, and just want it phrased better, so it sounds professional, and as if it were written by a native English speaker. My bid's amount and time estimate is for that.
I read voraciously, and converse (and think) in English. I'm multilingual, and English is a language I've been familiar with since I was 3. I've been writing professionally for a while now, and before then, I wrote for leisure. My English is perfectly fluent, and of native quality. I enjoy proofreading, and would love to work with you on this project.
Send me a message whenever you have the time, and we can discuss this project further. If you can provide your website's address or a file which contains the website content, I would be glad to review it and offer my opinion.
Thanks,
Priya