What your dad did is not as good as what you did yourself, but what you did yourself is very good!
According to the five elements you provided, the name can complement water and earth, and the name Gao Haoxuan just completes it.
The five elements of Gao belong to wood, the five elements of Hao belong to water, and the five elements of Xuan belong to earth. They achieve the purpose of complementing each other in the eight characters and five elements. They are a perfect match, already!