Great advice, and filmmakers need to understand that making money is a whole other strata of success that is rarely realized.
Every "aspiring" DP should know.
Red lost me when they wouldn't stop pushing me to upgrade, 2 years after I spent $20K on an Epic upgrade from Scarlet. And it was really great of them to drop the Scarlet price by 3 grand right after I bought it. Worse, they said they couldn't guarantee parts availability or repairs on a 3 year old Epic-X. Done with Red.
I don't know about you, but I truly hope I never have to look at a closeup of an actors face in 8K. And when most content is being viewed on handheld devices, what possible sense does 8K or even 4K delivery make?
Take my money.