No credit card required
Browse credit cards from a variety of issuers to see if there's a better card for you.
I would look at Cap One, Merrick, and Discover for unsecured credit card prequalifications.
Three credit cards is a great start just don't rack up to many inquiries to get them.
DON'T WORK FOR CREDIT CARDS ... MAKE CREDIT CARDS WORK FOR YOU!
Your student loan is considered an installment loan. You do not need a credit builder loan. If you follow the previous post and get three credit cards along with the student loans; you will be fine. Once you get the cards, let them age for about a year before seeking new credit products.