Adams got moved to LB for the Raiders because he was shot at safety (he just couldn't cover anymore), he played 75% of his snaps at LB and another 25% at slot CB, only 2 snaps all of last year at safety. And he has a serious tackling issue. And he'll be 31 soon with an extensive injury history... probably not a guy who is going to make an impact on this team. He really fell off a cliff after having 3 straight All-Pro (1st or 2nd team) seasons, getting traded for 2 1sts and getting a 4/$70M deal, then at around age 26 he was never the same, probably injury related.
They gave Pace $3.5M when they didn't have to, presumably to play special teams. Golday getting drafted in Round 2 was already the deathnell for Pace playing any snaps. He already wasn't with just Cashman and Wilson ahead of him. That money is unguaranteed so he could get axed and that wouldn't be shocking, but the fact that they paid him that much in an offseason where they barely spent anything makes me think they believe he is a very good special teamer.
The only spot I see Adams makes sense is as the Metellus backup, but the defense was totally fine when Metellus hit the IR last year and Jay Ward picked up his snaps. Once upon a time he was an elite blitzer so I get why Flores would like that... but not now in the twilight of his career.