Hi 57anchors, Welcome to the forum.
I started out using the linseed oil from W/N when I switched from traditional oils, but it was bothering my breathing as bad as the traditional oils did. Someone suggested walnut oil and I have been happy ever since. I've never tried the safflower oil but I know others have. I still get congested during a painting session but not as bad as before switching, but I just make sure that the painting is done in a room where I don't spend a lot of time.
The best thing is to experiment with different mixtures and find the one that works best for you.