Andrew has done it again!
Blackmagic is really lost on itself... Every camera they release has some problem. The Pocket has a tiny sensor and bad connections, the 2.5k had a weird sensor size that no lens exactly matched... The 4k suffered from degrading image issues...
Sometimes, the whole 'lot of camera for cheap' is a bad idea, and you really do get what you pay for. Honestly, I have never purchased anything from Blackmagic that was any quality at all, even sending back their mini-monitor card because of it's quirks.
I appreciate what they have done help bring down market prices: But none of their camera's are up to professional work, which is why you don't see them being used professionally.
musicloops.com is my go to. Why? Because they don't put stupid restrictions on the use of the music like most others do. They also have thousands of cinematic and fantasy/historical music clips which is what I use a lot.
Get a casting director #1. You don't 'hire' actors directly, as unless your really well known, their agents will not deal directly with you. Casting directors cast your films, and are the first line in getting name actors. Oh, and you'll need a lot of money.
Our company name is 'Mysteria Filmworks Ltd. Co. (tm)'.... I wanted something that rang with some newness and creativity, while not being total out there and still explained what we did in the name.
My advice: Name it what you want.
Linux is free. It is not a separate computer, just an operating system. I do not know if it can be installed on mac hardware, but it can be on a pc system.
As for your drive issue: You should always format your drive in a Linux environment. Since Linux is a free download, I see no reason to take a chance.