Upvote:1
I think your best chance is to extend your permit. Asking for a tourist visa immediately after your other one expires would raise too many red flags. Especially because your family comes here as well. Just call them, and ask how to do it.
One more thing: when I got my degree, the ceremony where I got it was a lot (I think months) after my last exam. Ask your school when this is, your family might want to see you get your degree, and this may give you one more reason to get a short extension. (based on distances, I assume you study somwhere in Gyลr, but I don't know enough to tell when your "diplomaosztรณ" will be)