To change the style of play you need a full rebuild. This team is WAY too finesse. It needs 2-3 new OL, 3-4 new LBs, a starting RB, 1-2 DTs, another starting level slot or outside CB, potential new FS and another starting WR depending on Cooks.
You can get things like a slot CB and starting RB in the draft along with a LB. But after the 4th round, those are not guys you’re counting on day 1 and there’s not the cap space to bring them all in via FA.
It would take 2-3 years. If the goal is just outscore people then yes, you don’t need as much, but you won’t win a title that way.