EDIT: Following the advise of several forum members, I am considering to go with the configuration in the title, so my remaining questions are:
1) The MSI B450 Tomahawk is pointed as the best value all-rounder in the B450 line, but from https://www.youtube.com/watch?v=FUp8YiWyR7s and the comments to that video, it seems that it is prone to malfunction. This motherboard was my original choice for the 3600, but now I think it may be better to go with the Mortar, which is very similar but has some extra I/O and not so many issues reported. That said, it is an mATX motherboard, so I was wondering if the reduced spacing for the components attached to the motherboard would be detrimental, and if so, how much. Also, the case I plan to use (p400a digital) is a mid tower case, but I don't see equivalent good options in terms of airflow/noise in the mATX format.
2) Would the Arctic Freezer 34 eSports Duo keep the 3600 (and maybe the motherboard's VRM) well cooled while not being too noisy or should I go for the Scythe Fuma 2 I was considering in my old post?
3) I read that Ryzen likes fast memory. What would be the minimum speed recommended for the 3600? And what about latency?
Would it be reasonable to team the components in the title up? Other components in the build will be 32 GB of Vengeance LPX RAM, Samsung 970 Evo Plus 500 GB and a GXT 1080 Ti, which I plan to replace with an equivalent card once Ampere is released. The case will probably be the Phanteks Eclipse P400A Digital in its stock configuration (not that I care about RGB, but it comes with 3 apparently nice fans). I am not super interested in overclocking the CPU. I was actually aiming at an i5-9400F, but since the i5-9600KF is "only" 25% more expensive (in the Netherlands) while having 14% more performance according to cpu.userbenchmark.com, I thought it might be worth to consider it. Now, my concerns are if the MSI B360-A Pro will be able to handle the CPU at stock turbo without overheating the VRM or throttling the CPU, and if the Arctic Freezer 34 eSports Duo will keep the CPU (and maybe the VRM) well cooled while not being too noisy.
From this video, https://www.youtube.com/watch?v=2GSoaRsuke4, it seems that the eSports Duo is a good budget cooler and can cope with high loads better than similarly priced or even more expensive alternatives, although I have found some contradictory numbers at https://www.tweaktown.com/reviews/9055/arctic-freezer-34-esports-duo-cpu-cooler-review/index6.html, so I would be willing to spend a bit more on the cooler if necessary and maybe go for a Scythe Fuma 2, which is about 10 euros more expensive and a better performer in both temperatures and noise according to https://www.tweaktown.com/reviews/9223/scythe-fuma-2-cpu-cooler-review/index6.html. Regarding the motherboard, from https://www.youtube.com/watch?v=l1dHa2F3fvw, the MSI B360 Gaming Plus is able to handle the i7-8700 well, and the MSI B360-A Pro looks quite similar but without RGB and maybe other "gaming features", so I guess it would be able to handle the i5-9600KF, which is supposed to have a similar TDP. Unfortunately, the temperatures of the CPU and VRM are not mentioned in the video and they seem to be using an open test bench. So, I would like to know your opinions about my setup or your experiences if you have used (any of) these components. My main activities will be data science (probably on Linux and probably similar to gaming in the sense that the CPU has to prepare data for the GPU to crunch) and rendering (probably on Windows and with Daz Studio, but I may add other software later).
As you can see, I would like to optimize my budget; however, if it is necessary to spend a bit more to get a reliable configuration, I would be wiling to do it. For example, I have also been looking at the Z390 motherboard line, and the Gigabyte Z390 Gaming SLI seems to be a good option with a VRM that doesn't get too hot and allows some overclocking according to https://www.tomshardware.com/reviews/cheap-z390-motherboards-compared,6090.html, although I have also read that (some) Gigabyte BIOSes do weird things like changing their settings on their own or even not throttling when they should (https://www.youtube.com/watch?v=cZcqw-K1drY). Do you know if that is the case with the Gaming SLI?