Could I get in?

My UW GPA is a little low- a 2.8, and I’m aware of the fact that that’s a lot lower than the average. Hopefully, my 1900 SAT score will offset that. I don’t have a lot of extra curricular activities because I never stayed at a school long enough to get involved in anything except for Creative Writing Club in 10th grade. I’m also an out of state student.

I think you will get in without a problem. For a more accurate answer, check out GSU’s "Panther Predictor tool here:
http://admissions.gsu.edu/panther-predictor/
You enter in your Math and Verbal SAT scores and your high school GPA and it will give you ba good idea about your admission chances. Don’t worry about extracurriculars - they will not matter at all.