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I don't have specific part numbers for the cables that you're looking for but something else for you to consider. I'm not sure how old the computer is that you're looking to use but there are free software solutions to the problem of recording your scanner audio. I use
scanner recorder which has worked very well for me. It offers a VOX function, meaning that it only records when there is audio. That saves you a ton of disk space filled with nothing.
It's input is the line-in port on your computer. I've found that less is more meaning that if you keep the scanner at a resonable but lower volume level that you'll end up getting much cleaner results in the audio that is recorded.
I use a 1/8" male to 1/8" male cord between the scanner's headset output and the scanner's audio input/mic port. (like your option #1) You could probably rig a similiar set up using your option two if your computer supported that type of input option.
Good luck finding the exact cables that you need. I'm sure that someone here knows the part numbers or at least how to find them.