Maybe the question you need to ask is, “do I need to keep this file at such a large data rate?”
Put another way, what is the intended destination for the short?
Are they making a film print?
If it’s for Blu-Ray, Broadcast and/or the web, it could be that transcoding to ProRes [or ProResHQ] will be all you need for a pristine end-product.
Sometimes all that extra data can be overkill.
Something to think about.
W