I think you're on the right track. Most people, and the digital folks, won't care about whether your work is on fiber or not. However people interested in, and certainly those who love, traditional photography, will. If the intention is to show your portfolio to any of these latter folks, you will have hobbled yourself "professionally" by not showing fiber. And then there are all those conflict–inducing issues of "archivability" and "beauty".
Never found film or development even remotely correlated to enlarging papers. An appreciation of light and composition is.
Fomabrom (graded fiber) is warm and fairly inexpensive. Slavich Unibrom is cheapest and some of the only remaining graded fiber true cold tones currently on the market. Both are capable of producing fine prints, although they are little thin – not actually double weight. I love the new "neutral" Oriental for its unique warmish tone, when I desire it over my usual cold–tone preference.
I don't see the correlation. This is your personal preference, driven by your personal visualization. I am sure that I am not alone in that an overwhelming amount of my Am. Southwest prints are cold, selenium toned, enlargements (older Oriental Seagull).

