First, @Abimael Garcia - welcome to TB! You've entered a world with no shortage of opinions and great advice
So here's some of my experiences to share... I have mixed opinions about the bridges, I'm not sure of the tone differences but I do own examples of both. On my Frog, I have the ETS, it is a 2-part bridge (so if you like that) it's easy to manage/adjust and stays in tune well.
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I have a bridge that's very similar to the WSC (mono's) on my Status Streamline and like the simplicity of those. They both stay in tune well, however not as well as my old Steinberger bridge.
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as far as electronics are concerned I really like the tone of the OBP3 and have that in a couple of basses so I don't think you can go wrong with that preamp. I have Delano's in my frog and really like the tone of those pickups as well.
The bolt on vs set neck is really your preference, I have the set neck on my frog and it's super stable and I don't have to adjust it very often so I like that. With that said, most of my other basses have bolt one because I generally prefer the snap/punch of the bolt on vs a set neck or neck through.
All in all Adrian builds a super quality bass so I don't think you can't go wrong with any configuration you pick, in my opinion