Upload & Sell: On
I just received an MC Rokkor-X 58/1.2 and I'm waiting for a Leitax mount kit, to let me put it on my EOS bodies. I assume this approach would work for your kodak slr/c. The Leitax cost me $93.65 CA, including shipping. Call it $91.00 US.
I also use Leitax mounts on my Contax Zeiss and wide Olympus OM lenses. It's a great product.
You have an interesting short list. I haven't tried any FL or FD lenses, but the Oly 50/1.2 that you include is a peach! I've owned the Oly 50/1.2, Oly 55/1.2, and SMC Pentax 50/1.2. I've also used the Nikkor 50/1.2. Of these lenses, I think the Oly 50/1.2 is best. It has the least 'glow' wide open, and is very sharp when you stop down a bit. Plus, it's very small.
I sold the Oly in a moment of weakness a couple of years ago, and so I just picked up the Rokkor to see what it's all about.
I also have and often use the Canon EF 50/1.2L (which I think is better than all of the manual focus, ultra-fast 50mm and 55mm Alt lenses that I've owned), and so I look forward to comparing it with the Rokkor. Not because I'd use them on the same occasions; just because.
P.S. the SMC Pentax-A 50/1.2 (Alpha) in your list looks very interesting. I likes Pentax, but I have gradually shifted towards Mamiya 645, Zeiss (Contax and ZE), and Olympus OM for my preferred Alt lenses (not counting Fujifilm XF autofocus lenses as being "Alt"). Based on my experience, I decided to stop looking for a reasonably-priced SMCP-A 50/1.2, and get a reasonably-priced Rokkor 58/1.2