What's a good longboard size for me? I'm 5'2''

I'm 15 years old 5'2'' I'm planning to buy a longboard soon and I don't know a very good size for me. I used to surf with my friend a lot and I used on of her boards and I think it was a 6'4'' and I kind of liked it. Do you think that's a good size for me? And also, if you could recommend me any board brands I can get a hold of anywhere near North Shore, Hawaii, that would be great!
thank you!
