I don’t have a particular problem with an entertaining approach to praise, but .... “Hey God?” How about “Dear Heavenly Father?”
You know, I like to think that God wants a personal relationship with us, and might be even more pleased if we are comfortable enough to be informal when we talk to Him. After all, would your earthly father like it better if you called him “father” and held him at arm’s length, or called him “dad” and treated him as a friend? Still, I don’t think it’s wise to drop all the formality in a worship service.