This was actually my first watch. I really enjoyed it for a while. It's definitely VERY sporty looking so hard to wear outside of casual.
My only comment would be to seriously consider if you think you want to "get into" watches. Because if you think that might happen, eventually you're really going to want to go to mechanical watches and this piece might feel underwhelming and you might regret spending the money.
If that sounds like a possibility, save up a little more for a Seiko or an Orient. You'll thank yourself. There are reasonably nice Seiko 5 models that you can snag for a couple hundred bucks and will be more versatile and reasonably high quality for the money.
Imo the Seamaster in general is the best GADA watch on that list. My only comment would be to get the milanese on it. The black on black rubber would be hard to take formal. Imo I'd go for a stainless reference over the titanium. And don't listen to the hate on the bracelets - they're fantastic.
I think the Santos is the most iconic watch on that list, but it'll get bunged up way more than the Seamaster and isn't something I'd wear as a GADA.