Actual work experience will make you a vastly more desirable job candidate than someone with just a degree and no experience.
Many IT jobs require x number of years of experience before they will even interview you.
I would highly recommend taking the job. In the classroom, you mostly learn the theory of how things work. Work experience will teach you all the variations, tricks, caveats, exceptions, and various pieces of hardware and software that you wouldn't otherwise see in the classroom.