Bookcases in Pinus sylvestris?

[Garald]

You may remember the beginning of my bookcase adventure. After a bit of searching, I found a carpenter whose fees seem a bit more reasonable and whose work I think I like more (to judge from pictures: https://www.instagram.com/pmlagencement/  ; the one I asked before is https://www.latelierdurenard.com/). 

 

The new carpenter is willing to work in pine - more specifically in "triplis pin sylvestre" with a pine plywood backing. I take "pin sylvestre" is Pinus sylvestris, aka Scots pine, European red pine, etc.

 

Is this the same pine that IKEA uses, or is it something better? Is it a good material for built-ins for which I will pay a fair bit of money?

 

Needless to say, more than 70% of the cost is labor, and so it would make sense to ask for quotes in other woods. One possibility the carpenter has mentioned is making the body out of rubberwood and the front part out of oak, Here is an example where he did exactly that:

 

 

We are talking about a non-trivial investment (more than 5m worth of bookcase, 2.7m high), so I'd like to make the right choice.

Edited January 19 by Garald