Voiceover Editing for Video Game Dialogue -- 3

I'm looking for an experienced voiceover editor and sound engineer to compile and edit dialogue for a video game. I will provide the audio files, as well as the game's script so that the audio files can be cut and spliced together to form each scene. I also need the dialogue edited e.g. reducing background noise ( where applicable ) and levelling the volume of each scene to the correct amounts. However, I also need a solution for line variations, where I can easily choose the correct line for the final product, as many of the lines have been recorded multiple times. Finally, I need the file for each scene in a format where any smaller edits later in production e.g. increasing the space between two lines, changing volume, etc. can be done. The total word count for the entire project is around 30,000.