I think it's very nice, and it grows up well. And, he won't be one of five with the same name in his classroom.
My cousins name is Douglas and we all call him dougy Haha
I like that name, its not very unique though. I guess it depends on the region. How about mixing one of the names with something else, Like Axle Douglas, Jeremiah Acai, Hadley Douglas, Jeremiah Wes, Douglas Van, Jeremiah Van, JD Cantu, Oscar Jeremiah, Douglas Aeton, Douglas Eisley(Eye zlee), Dj Campbell, Dj Avianni, Jd Bentley, Jeremiah Coy, Mason Douglas, Jeremiah Jackson