Please weigh in here on which SSD setup would be ideal for video editing

Hi.
I have a question concerning a hard drive setup in a laptop designed for video editing (with Adobe Premiere Pro).
I know that laptops are not ideal, to put it mildly, for video editing, but I have no choice.

I will have two SSDs installed in the laptop.
Only one can be an m.2 PCIe NVMe. The other will have to be a SATA SSD drive.

I intend for one of the above SSDs to be the "system drive" and store only the OS and programs.
The other SSD will be the "project drive" and store only the project files (the Adobe Premiere Pro file), media and cache.

When consulting with hardware savvy people who have experience with building computers, they tell me that it would be most beneficial to make the faster drive (PCIe NVMe) the "system driv"e.

However, when consulting with people who are hardware savvy as well but also are very knowledgeable regarding video editing — they say the opposite. They say that it would be most beneficial for me and make a faster editing experience if I make the faster drive the "project drive".

So I'm in a loop here and not sure what configuration to go for.

The claims for making the faster SSD the "system drive":

...their (solid state drives) main advantage is their near-instantaneous seek times, as well as their ability to read many small files at nearly the same speed as one large file. This is excellent for storing operating systems and programs, as they often require accessing large numbers of small files. However, for video editing, what you really need is a sustained transfer rate, and while SSDs are still faster than hard drives for this, it's not by as much you may have thought.

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Installing the OS on a regular SSD while leaving the storage drive as a PCIe does not naje sense. Applications such as Adobe programs require rendering and can only render as quickly as the processor and SSD will allow. I can assure you running the PCIe for the operating system and installing Abobe on that device will result in your best outcome. What I would suggest is purchasing a large enough PCIe SSD so you're able to have your operating system, applications files and some project files stored on the PCIe, it would allow the optimal performance solution.

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The claims for making the faster SSD the "project drive":

If you get a machine with only one PCI NVMe drive, it would be best to use THAT drive for your media, project files, previews, media cache, and cache files. Another words : EVERYTHING OTHER than what would go on your boot drive, which should ONLY be OS,programs, and Windows page file. The NVMe drive would be a WASTE to just serve as a boot drive.....the incredible bi-directional speed is what you NEED for serving up your media files and all other editing operations. The OS and programs become "memory resident" once loaded, so a good Samsung 850 Pro SATA III SSD would serve well as a boot drive.

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They (the people who prefer the faster system drive) are wrong on that. My dear departed Harm built a X99 based system and did that and I have an almost identical system with an old Samsung 840 for the OS/Applications and of course a Samsung 950 Pro 512 GB and he was not able to get as good PPBM scores on his computer as I have.

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Both opinions are from people I completely trust and have lots of experience. Would be happy to get some more opinions here. If anyone could weigh in on which way to go this, it would be much appreciated.

Thanks!