Right now, JMart as the 4th OF'er makes the most sense. Once Pedey squeezes Nunez out of a position, we will see.
It's really a choice between Moreland/HRam and Nunez. With Moreland at 1B, HRam at DH, and JMart in the OF, Nunez can only play when our SS, 3Bman or 2Bman needs a rest. That's only maybe once a week. I don't see that happening.
Assuming Swihart and Holt/Lin get zero PAs after Pedey comes back (doubtful), maybe we can see something like this...
Vaz and Leon continue sharing catcher duty.
1B: HRam & Moreland
DH: JMart & HRam/Nunez
2B: Pedey & Nunez
3B: Devers & Nunez
SS: Bogey & Nunez
LF: Beni & Nunez/JMart
CF: JBJ & Beni
RF: Betts & JBJ
10 players for 8 slots in the order. If we spread it our exactly evenly, whci i doubt we even try to do, it comes out to everyone sitting once every 5 games. Let's assume we rest Betts, Devers, JMart, Beni and Bogey once every 10 games (16 games a year). That leaves the other 5 guys (HRam, Moreland, Pedey, Nunez & JBJ) needing to rest 15 days every 10 games. That's 3 days off every 10 days. It doesn't seem realistic to me. My guess is one or two guys will be cut way back, or we might trade someone. Maybe someone is slumping badly or gets hurt and makes the choice easier. Is Nunez the worst hitter of the 10? Moreland? JBJ? Moreland & JBJ are plus defenders, but does that mean they play more than Nunez?
Pedey might need more rest than others but how much?
Things could get tricky.