I am going to be switching to something Unix for my primary OS, and I really need to know right now, which one is going to be able handle getting tweaked up entirely, and be able to stay fluent doing all the stuff I plan on doing using Unix?

I need to be able to have grass roots control sometimes, and get as close to hardware and their instructions as practical . Then the rest of the time, I also would like it to be fluent on its own, for efficiency and convenience, and wouldn't mind it packaged with the essentials, like having codecs; also handling basic drivers on its own would be a big plus.

That being said, I still want to be able to get at anything/everything (all the nooks and crannies) without it being an obstacle to get at, but it's also nice to have the OS accommodating me while doing that as much as practical.

Just a few examples of the things I'm envisioning doing (some demanding, some convenient, and some stuff just insanity and recklessness, and antics that you would maybe say aren't possible if they didn't sound like they could work):

- Put a second OS on the machine, completely gut it, like, straight up filleting the stuff I don't want out of the hard-drive and leaving only the bare bones, restricting it from taking up CPU usage, and letting it run in the background as just a command line.

- Rigging up ports on my motherboard to hook up devices that aren't meant for computers, or in some cases never intended to be hooked up to anything period.

- Keeping a surrogate PC solely as a first line 'dummy' so disruptive garbage getting dumped off by the internet for no reason gets sent there instead, that way I can look at the endless piles of crap and headaches and get to just stare at in awe without having it already being on my computer first. Then periodically do fresh installs on the dummy, and make it so the installer sets it back up for being a surrogate again automatically.

- Logging anything and everything that ever takes place on my computer, as one big unmanageable volume of raw data stored in the form of random characters and symbols that can't even be translated back into anything .

- Logging instructions from my actual processor by mining it out of my RAM, yielding mounds of gibberish to be read through by me later for no reason.