why f8? Could use f5.6
why ISO 200? using f5.6, you can use iso100
light is a bit on the harsh side, due to time of day and altitude (guessing). Consider a circular polarizer or a variable nd filter or ideally own both.
Why not use f/8? I shoot a lot of landscapes and rarely use a larger aperture than f/8 - am usually between f/8 and f/16.
You have to be careful which VND you use as many of them leave colour casts. yes these can be removed, but you will remove not just the cast, but also other colours at the same time.
using wider aperture(as long as it is sharp enough), you can speed up the shutter and minimize blur due to winds blowing trees around as an example.