Good day.
As a current at-home writer, I have all the skills that you're looking for, with all the time in the world to work on this project.
I have worked with many companies before, most recent being an online magazine. I'm extremely efficient, reliable and trustworthy. I see that this project involves Wikipedia - another website that I've spent way too many hours reading, meaning that I'm quite familiar with it.
Writing is something that I truly enjoy and so I'm confident that I will prove to do very well at this project.
I look forward to working with you!