> black magic intensity shuttle
You might use it, since you already have it, but don't expect it to play nice if your signal is not perfect, specially that you are not using a frame TBC with it. It is not the greatest capture card, see other posts in the forum for more details about its flaws.
Just get yourself a Hauppauge USB live2 like everyone, and/or a gv-usb2, play with them, mess with settings, see when you are happy, post samples here, etc . You can also buy a card from the marketplace of this forum.
Use these with VirtualDub
, or amarecTV for capturing. Use a lossless codec, like UT video, or lagarith. Then do post-processing later.
I understand you are proud of your beast PC, but sorry, those muscles won't matter for capture and they are irrelevant. For editing post-capture, they will surely come in handy tho.
Capturing is happy with minimal specs 2-4 cores, on some 2013 I5. For best results, you boot from a drive, and you capture on a different drive, not the same one used for the OS. Boot from an SSD, but get use an old school HDD for capture.
Try to avoid windows 10, and use windows 7 if possible, you seem to have several Hard drives, so you probably can fit in an extra OS. or at least, turn off the internet during capture if you insist on using win10.
Regarding post-processing, now you can use that premier pro you mentioned, or IMHO, try to learn Avisynth/vapoursynth.
Post processing is a whole different world and can be subjective, and it is up to you to see how much correction/post-processing you want/need.