Scott, why did you go with Ubuntu vs. Fedora? (Asking for a friend)
Because it's the official OS of the product. Absolutely no reason to use Fedora here. Unifi only supports Ubuntu and Debian, and Jared and I have opposite views here. Ubuntu is the business product of the Debian family, Debian is the hobby project that is used as the basis for it. Debian is great, I love the project and they do great work, but it doesn't have primary vendor support, you are at the mercy of a hobby project. Ubuntu uses that basis and turns it into a production ready release with vendor and market support options.
Ubuntu isn't Fedora, but it's still extremely good.