Hello
I'm Felipe, a Sound Engineer and i can help you out. If you have some of the work already done (like the FX or voices) then i can find the corresponding music to mix to the project. I can browse through a royalty-free music gallery to find some suitable tracks for the video purpose. If anything else needs to be added to the mix, it can be done with no problem at all.
For the deadline, i will need to know how much time do i have to meet your demands.