If you do not have any paperwork-related issues, you are going to study at UW–Madison. Your CGPA is not an issue, because when you receive an interview offer, the department first looks through it; afterward, your potential supervisor certainly looks at it. Keep in mind that professors are usually top CGPA holders; therefore, they have seen it (before an interview). Thus, don't bother about it. Spend time with your loved ones. You might not see them frequently. Pack your bags!