Does anyone have any advice or experince to share for an aspiring actress?

I'm 14 and I live in Alaska. I've thought a lot about how far I could make it into an acting career since I live in Alaska, but I've decided to go for it. I don't want to spend the rest of my life sad because I didn't chase after my dream. Before any of you say its hard to get into, I know. I know its not all perfect and easy. And I can take that. So, I told my parents and I might start homeschooling so I can finish highschool early. I've been told I should do drama in highschool, so I'll try to get into drama. My parents also said I should start out doing local commercials and things like that, so I can get the feel of what it would be like. I know to get anywhere you have to have a good resume, and that would be a good thing to add. I also hunt, dance, and do gymnastics. One thing that really bothers me is how to become a part of SAG. How do I go on to get represented by bigger agencies? I'm not planning on becoming one of those happens over night super stars, I know I'm going to have to work for it. So how do get to that stage after I do commercials? The only other opportunities in Alaska are casting calls that are very, very rarely posted at the mall. Mostly just for extras, but I would take anything I can. What do I do after I get the experience? Any help is appreciated! Thank you!