WIN 32-inch barrel doesn’t take 3.5
REM 28 does
Rock and a hard place...is what that is.
Then I would go with the Rem 28 and choke it.
You will get more range than 3in with 32in barrel. And hit harder with heavier shot.
3.5in with #4 is a devastating load, with range. Geese at 200ft if you can hit them.
But your shoulder will pay dearly. Especially if shooting up.
I’d go with the option of 3.5 shells. Make sure the choke is good for steel shot.