Hi Trevor - the way you have described the Übermensch I think does match the "philosophy bro" version...but this, I believe, is far from what Nietzsche intends in his writing. The "über" part does not mean super, as in better than it means something more lick the "self-overcoming" man. The one who continually strives to overcome his/her limitations and boundaries. this is not a licence for wonton hedonism. But rather, a challenge to future generations to create their own morals and moral systems in a work in which the traditional god-based system has fallen apart. Nietscen also believed that humans created "god" to begin with, and yet, saw bin the mid 1800s that this set of believes was inevitably unravelling, and we would soon enough be in a world without god, hence without the moral order "god" - the "god" we created" - bestowed on us. Therefore, it would fall to those capable of overcoming to create new moral systems.
Nietzsche did to define any particular new system - but he did want them to be honest about power and will. Bear in mind though that he himself was far from hedonistic. He a simple, almost monkish life, writing for the future of humankind. He abhorred some things: anti-semitism, nationalism, and intellectual dishonesty.