First of all congrats on getting your first property. What an exciting time for you!
Lots of good replies on this thread and obviously there is no right or wrong answer. Many years ago I managed my own properties and experienced the ins and outs first hand. Now I have a professional career with demanding hours and must have a PM. Plus I travel a lot. But as an earlier post indicated, how do you manage your PM if you have not done it yourself? And don't believe that is a hands-off/no work situation either. You're either managing the property or managing the property manager. You must be sure to let them know you are paying attention by reviewing the leases, the monthly statements, asking questions about your properties, etc so they remember they have a customer they are accountable to.
All that being said, the two things I believe you must have great confidence in before you could do the management yourself would be 1) exceptional tenant screening & selection and 2) a reliable maint man that you could call upon nearly any time.
Lastly, I remember my first property and what a pain it was to deal with compared to my stock investments. I almost dumped it since it was all this extra work I had not experienced before. But know that after you get multiple properties and start getting some economies of scale, the aggravation shrinks relatively and the effort really starts to pay off. So hang in there and good luck with your decision.