HR is a very interesting field.
As your senior management is supporting you, i would suggest you to go ahead. I am sure you will not regret this decision at any stage.
HR is no rocket science. But basic knowledge in HR is a must. A good degree in HR will definitely be helpful to you. Please keep yourself updated continuously about the different aspects of HR not only in your office but around the world.
Wishing you all the best for a bright future.
8th June 2014 From India, Secunderabad