Marriage

Hi all. Am studying in Norway  am from Africa my girl fried( Norwegian)  and I plan to get married we plan to go marry in Denmark. I would like to ask if the process time for a family permit reduce if someone is already living legally in Norway? And if my girl still need to show probe of income after I have showed enough money to cover my expenses as a student .
She is currently in another city and am in Oslo where I study but i always go to get place for weekend and holidays is not living together for now can that be a problem in residence permit application even though we have one everything?

i was told the processing time is much faster if you have a job that pays.