Mid-placement of the rear peep like that is perfect IMHO. Some of y'all clearly ain't -3.25 before correction in their dominant eye. AKA some of us now on the downward slope towards Old Fart status, with the eyesight to match, appreciate the rear being where it is. Maybe it ain't ideal for shooting the ass hairs off a squirrel at 100 yards, but it's sure a lot better then NOT being able to see the rear sight at all!
My ARs are set up similarly; rear sight is forward of the optic, otherwise is completely disappears if it's closer to me.