Honestly you can sand it/brush it down to metal and rattle can it, or have a bodyshop clean it and touch up the paint as best as they can. That's pretty mild rust bubbling under the paint from those pictures; pretty easy to fix this early on.
Haha thanks! I have a Shrockworks bumper on the way and I just lifted it so I want this thing to last me. I haven't seen many pictures of this yet so just wanted to nip it in the bud.