Great news. I hope you can get this finished within said timeframe.
I tried Catalyst Browse to convert a 100-Mb XAVC file to Pro Res 422 and it ended up being 500 Mb. With smaller projects this may not be a problem but with larger ones it is a different story. As others have noted, this can only be done one file at a time, but I imagine with Catalyst Prepare there is some batch option. I have not tried the demo version of Prepare yet but I am curious to hear what others have to say about it.
Thanks for the feedback.