Hello,
I've done this before, I've added subtitles to movies and some other stuff, hardcoding them through Final Cut, which I understand is what you need.
Also, I take it that safety margins aren't an issue as this will be exported to the web? If you plan on using them elsewhere, there's the issue of the text margins and character limits.
I would like to mention that, although I've been freelancing as an editor for years locally, I am new on this site, which is why I have zero ratings and have placed my bid well under the avarage on your proposal. I also went for two days completion time, although if everything goes well it should be just one. (I always like to take a bit of extra time in case anything goes wrong – as it usually does, heh)
Anyway, I'm available for any questions you might have and I hope to hear from you!
Kind regards,
Mircea