Same initial for first and last?

My husband and I have a name picked for our baby boy, but people's comments about having the same initial for first and last are making me question.  I know plenty of people having the same letter for first and last and it doesn't bother me, but this is my child's name for the rest of his life so I just want to make sure I'm not missing anything. 
Lincoln Lawrence would be his name.  Middle name either Grant or Alexander.
We still love the name and initially I didn't see a problem, but the more I hear it, I just wonder if it's THAT big of a deal.  Thoughts?