If you have better motherboard options that would be great aswell. Budget for a motherboard is anything under $200.
Computer will be used for gaming and multimedia. No video editing.
Really any of those motherboards will work just fine I personally like the first Asus board listed but they will all work. As for your build if all you are doing is playing games you don't need 16 Gigs of RAM that is way overkill. In most cases 4 gigs is enough and 8 gigs is more than enough. I would also get a different PSU. IMO Rosewill powersupplies are junk and I wouldn't buy one. I would stick with Seasonic or Corsair.