I'd check on your father's connection first. If that works you could get citizenship, move over whenever you want, and pay home fees to the university, which are MUCH lower.
If the father connection does not work out (and I don't know anything about the details since I knew it doesn't apply to me) then there are lots of other things you can do. If you are accepted at the Uni in Aberdeen, and you can come up with the money, then you can get a student visa. That's not a way to citizenship, but it gets you over here. There are several schemes where after you graduate you can stay here and work for a while. They keep changing - usually in the upward direction - so I don't know what is current, but basically, you can stay for a while after you graduate. If you have a company here that wants to hire you then you can get a work visa, which is a reasonable way to citizenship (5 years now). Or, who knows, if you're at the Uni you might meet someone. Not saying you should marry someone to stay in the country, but people meet at the university all the time - it could happen.
The point is, once you come over there are a number of paths you can follow if you like it and decide you want to stay.
Foreign fees are expensive, yes, although not more than several US universities. Aberdeen is a good school so you should be able to get US loans if you need to go that route.
Do a little research on the paths to citizenship. Then come back here and ask what it means, since it is all confucing government-speak. There are a number of paths, and since I don't know your situation, or that much about the laws except as how they applied to my situation, I can't help much more than that. But Victoria and Garry do know the laws - its their business - and they are real good about answering qusetions.
Good Luck. I'm enjoing studying in Scotland.