Hi,
I am composer and I'm very interested in your job post.
Before you choose me, I have no problem to do 1 page as a test (free), this allow you to be sure I'm the right person for your job. Maybe you can suggest a better process, but I imagine copying the whole score in sibelius, to get the exact midi and then work with the final MIDI details in my DAW.
I am available to chat by email or Skype.
Regards
Bruno