With the Hader blowback, and knowing you have an elite closer like Williams, I would definitely approach for a longterm deal beyond 2025, buying out the remaining 2 arby years. If it can be a viable deal that tacks on 2-3 more years beyond Arby years I am all for it. If we were to see a slip it's likely we would have seen it by now.
Rest of your comment is spot on. The only one I would maybe consider for an extension beyond Devin is Rowdy. On the simple fact you know what you have, he is average or a little better than average at first base, and should be affordable. It would be nice to have a single position where the consistency is pretty standard. Should allow the OF and Turang Development to progress while having that known commodity at first.