I'm bias cause of an astigmatism, so something like a vortex spitfire prism, might sit high though.
But I know for my Marlin dark I need the optic as low as possible so I was using a Nikon spur but ultimately I Love the irons on it, a "ghost ring" setup is hard to beat.
as for muzzle breaks I found it way too annoying with the side concussion for anyone else and felt little to no benefit cause 357 in a rifle doesnt rise much and youre working the action anyways. that being said try something cheap to see if a muzzle break is even something you want on this rifle