The pickup angle is a perfectly normal thing for a player to do to get the tonal balance they prefer from string to string. You really need to read all of the FAQs on this site. In particular, you need to understand how to adjust pickup height before you try it so that you don't break something.
The comment about the touch means that the action is probably set very low. That's just a matter of setting the bass up to play the way that is most comfortable to you.
Also, I would stop worrying about what woods are in the instrument. At this point, it doesn't matter. If you can hear it before you buy it, you will either like the tone or not. If you've seen it, either you will like the way it looks or not. The wood content of a 70s Alembic really has no bearing on the value.
You didn't really say for certain, but your messages suggest that the seller is local to you and that you could try it before you buy it. Is that true? If so, then go try it out. That will tell you if it's the bass for you better than any chat here.
If you can't play it before you buy, you have to decide how much risk you're willing to accept. It sounds like the seller won't take it back under any circumstances, so you need to be ready to walk away if you're not comfortable with the deal.