People saying w need a #1 Center, I completely get their argument. Coyle nor Zacha are the sexy name in the league that traditionally looks like your 1C. I don't agree or disagree, I'd be happy to get a legit #1C or I'd be happy to run it back with Coyle/Zacha/Geekie/Poitras/Merk/Beecher down the middle, committee approach.
My target, not focusing on any of the UFA C's would be Hanifin. Would love to see him and McAvoy pairing for a long long time. Give him Gryz + Forbort's money on a long term deal. Love Peeke as the #3 RD. I'd give Lohrei a look next to him on the 3rd pair. Lindholm-Carlo obviously on the 2nd pair.
I'm not going to comment on keeping/trading Ullmark or Swayman until we see how the remainder of this year + playoffs go. It almost works out better if Ullmark is the guy and takes us deep into the playoffs. His value should go up for a playoff run and Swayman has less bargaining chips riding pine in the playoffs.