It sounds like doing the internship will open doors to the career you want, then go for it. Save up money, and if there ever is a time that you may need your father's financial help, take it since he offered. You can always pay him back.
Stay connected with the people at your school, even after you graduate. Once you quit your job, get involved with writing organizations and freelance. Your internship will help when applying to jobs. I was once offered a position partially based on where I had interned.
3b/c, medium-coarse, low porosity, high density
HG: Jessicurl Too Shea and Kinky Curly Curling Custard
Shampoo: nonsulfate shampoo and Suave Naturals sulfate shampoo when needed