Need help on my PC build

Howdy, y’all.
So, lately I’ve been working on a PC build that I can eventually play all my games/make music on. It’s based on an Intel LGA-1151 socket with a Skylake i3-6300 that I plan to upgrade to an i7-6700 somewhere along the line. I also want to get a decent GPU, so I’m looking at the AMD RX-480 because my mobo specifically states that it supports Crossfire, and not SLI.
Are there any points of note that y’all can give me? I don’t have the PSU yet, so thankfully I haven’t blown anything up yet.
What I do have is:
Antec ONE case
Gigabyte Z-170 mobo
Intel Core i3-6300 microprocessor
Samsung 750 250GB SSD