Nice images Jose, and it does bring up a small concern I have...
Of these images, my favourites are the longer focal lengths, opened up (the 85mm f1.6 but especially the 300mm f2.8).
The lack of f2.8 FE zooms isn't something I'm fully comfortable with yet (and/or using un-stabilized A-mount lenses).
At the shutter speeds he's shooting at, it'd probably be better to turn off the stabilization.
I don't think stabilization is needed tbh (its useful to have for sure but not NEEDED like people make it out to be). Just my £0.02...
Do you shoot a lot at 200-300mm? Do you think an f4 lens would give you the results you want (as opposed to an f2.8). Would love your input.
I do but not people (or rarely people). At 300mm I think f/4 is plenty, more depends on your technique and setting.
Sorry, I know you asked for Jose's input, I just felt I could shed a different point of view. What works for me may not for you etc, but at least now you can consider a different idea
--
Focus on what you have, not on what you don't.
https://www.flickr.com/photos/nandbytes/