[gondowe]

First of all say that I dont have at hand the texts cause im not at home for a time.
As for the location, this is something I thought in the moment I inserted, but in the proper sentence is said "the distant mountains of Valinor"; in my opinion this is enough to think the Noldor were far from them, and they must be in Araman because "the mists of Araman". Of course in my location Taniquetil is very far away but it was the highest mountain of Arda and in other way of thought it is not neccesary that could be seen, only can curse in its direction.
But, again coul be my erroneous interpretation of english?
As for the word if you want to maintain Dahanigwishtilgūn, in my opinion is neccesary a footnote explain something like this very obscure word and not insert it into the narrative that sounds out of context like (for me) every philological, etc text. But I think is better to change directly in Taniquetil because is a possible explanation into the subcreation not a especulation of us.
Greetings