Well, yes, I think you're getting the gist of what I'm saying, Sir Kohran.
Just a few things to note. You will remember that Ulmo had a role to play in Turin's life, but Turin rejected the god's counsel. It's a shame that the Beren & Luthien tale, and the Fall of Gondolin~Eärendil tales probably won't get the same treatment as the Children of Hurin tale, because as The Silmarillion shows, Ulmo, like Manwë, comes closest of all the Valar to understanding the mind of Eru. So if Ulmo is giving the counsel, it is safe to conclude that it is in agreement with the mind of Eru.
I understand why Job might come to mind as comparable to Children of Hurin, since Satan is introduced as a persona in the book as is Morgoth in CoH. However, a closer comparison can be drawn to King Saul of Israel. Both Saul and Turin labor vainly against curses; Turin's initiated by Morgoth; Saul's initiated by Yahweh as punishment for Saul's disobedience. Saul's life after the punishment begins is every bit as "downhill" as is Turin's.
Another thing CoH does not tell the reader (therefore yet another fault in the work as published) is that Turin will be at the Arda version of Ragnarok, and will slay (shoot I forget who) either Morgoth or some great evil wyrm or monster of some sort. So Turin's "eucatastrophe" is assured.