Best workflow for .mxf

I have been working with a Sony FS700 and recording 4k. I want to submit the best quality and have read the video requirements page but am still not sure the best way to do this. I have Sony Raw Viewer but the export for Quicktime is 2k. I have FCP 7 and FCPX.

Also, as a side note, when I try to export any other format for Raw Viewer, it desaturates the "images" and creates a kind of emboss-looking effect.

Thank you in advance for your help!

-Robert