I assumed "hitting like he used to" meant like his last full season not like his MVP year.
2018 OBP with Pedey's 2017 season mixed in:
.438 Betts
.402 JD
.394 Pearce (w/BOS only)
.369 Pedey (2017)
.366 Beni
.362 Holt
.360 Bogey
.325 Moreland
As you can see, many players are close to Pedey's .369, except for Moreland, so maybe Pedey 3rd vs RHPs might do better than Moreland in that slot, but I still like Bogey up 3rd. The 5 slot gets more RBO opportunities than the 3, so keeping Bogey 5th is okay, but I like Devers up 5th going forward.
It's no biggie. Having Pedey back close to form is a great problem to have. The hard part may be getting Holt & Nunez enough PAs, not who bats where.