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Will simply clicking on the "Concave in Kicks" apply a decent amount OR do you need to punch in specific values?
I measures some factory decks and it looks like 3-4 centimeters of drop exist from the edge of the tail to the center...

That's what I used on my most recent build and have been very happy with the feel of it - it's enough concave to feel it, but not too much that it causes issues when pressing (using two 20-ton jacks). It will vary a bit depending on the angles, radii, and length of your nose and tails, but if you stick in the rough default range, it looks like it's about in the 3-4mm range at the tip.

Here's my latest build video - I show all the specs I use (you may need to just pause the video, since the playback is sped up): https://youtu.be/T406jjUYFDw?t=22