Most of my photos I shift the WB in post because I want to create certain effects. Most of your photos look better with auto white balance. Generally I think you shouldn't try to cheat a clear blue sky into having some yellows. If it has a bit of yellow and you enhance it then it's fine. Adding yellow to blue skies makes it look very artificial.
I think the WB shift only really worked on the 2nd image, the rest look too artificial