Best drive setup for Premiere Pro CC

Hi guys,

I am about to buy the following setup for video editing and a bit of after effects:

Intel i7 8700K

Asus ROG STRIX Z390-F GAMING S1151v2 Z390/DDR4/ATX

1000GB Samsung 970 Pro M.2
500GB Samsung 960 Evo M.2
512GB Samsung 860 Pro SSD

How would you ideally split the drives for optimal performance? Here is my idea:

970 M2 for 4k footage & media files

960 M2 for Window 10 and creative cloud

860 SSD for cache and preview

Or

970 M2 for 4k footage & cache and preview

960 M2 for Window 10 and creative cloud

860 SSD for project files and media files

Or shall cache and preview be the fastest drive?

Help much appreciated! Thanks, Alex