With an overpair in a low SPR 4-bet pot, we should prioritize small flop sizing to keep ranges wide and jam turns to maximize value against draws and top pairs.
Betting small is the preferred strategy with our overpair. We have a significant range advantage on this Jack-high texture, and a 1/4 to 1/3 pot sizing forces Villain's high cards into a difficult spot while getting value from Jx and draws.
Shoving is the most effective way to realize our equity and deny it to Villain's numerous draws. With the SPR below 1.0, we are fully committed with an overpair.