Good day,
Sydney based web development expert, experienced with HTML5, CSS3 and jQuery.
What is the url to your existing site and do you have a lists of changes need to carry out? I can start work right away in that case up receiving the FTP info.
My regular rate is $60/h, and I think your work could be covered in 3~4 hours according to your description, instead of 5~10 hours as you estimated.
Which provider do you use to host your site? $800 for only FTP access sounds unreasonably high.
Cheers.