Dave, what is more valuable to you - time or money? If you value your life (most sane people do) then how about you just buy a 5K iMac? Arguments for and against can go on forever, but for a professional YouTuber with time at a premium, I am extremely surprised that you're still fiddling around futzing and schmutzing with tin box computers and asking random internet folk about processors... seriously, you're wasting so much time and energy on this faffing about. Do you want to buy a screwdriver and removed screws with it, or design a mould for the handle, machine it out, choose a resin for the handle... make a steel shaft... shucks man, just buy a Mac and quit wasting your life on this kids play rubbish.
YES, you like and are used to your current NLE - well guess what, we all HAVE to learn new things, so either you wanna edit and publish videos like a pro, or you wanna keep dilberting around with half-baked custom PCs, because you enjoy this nonsense of "sticking it to the man" ("the man" being Apple, most likely, I can hear your words ringing... SCREECHING in my ears, son.) If you "enjoy" building PCs like someone who's just discovered that modules plug together, have at it...or just get a Mac and let Apple take the strain of concerning themselves about what fits where, what driver does what.
PS: When WAS the last time you gave FCPX a fair go - 2009? Come on man, I can't take you seriously unless you open yourself up and try AGAIN, sheesh.
Macs are the de-facto editing machine for professionals.