Custom-fit earplugs can be had with valves
in them that screen out blasts, but allow normal hearing. Ditto electronic earmuffs, but they are somewhat more prone to being knocked off of your head in violent movement. The silencer is still a good idea, for the lack of muzzleflash. Why just assume that the place will be well lit? It might even be a poorly maintained meth lab, with the air full of ether or acetone fumes. If you are going in on terrorists, it's unwise to assume that they won't have earmuffs and body armor. To go in with just revolver would be a good way to get killed. There is a reason why Miculek chose to use mild loads, in a huge, heavy revolver for his speed record attempts. Full-charge magnum ammo is way too slow for repeat shots with a revolver. A truly handy pistol can be an advantage over any longarm, if you expect the quarters to be very tight, if you expect to have to shove hostages out of the way, if you expect to have to dive through windows, crawl through small holes knocked in interior walls, or through tunnels, crawl-spaces under trailers or homes, in attics, if you want one hand free to climb ladders, rappel down a rope, open doors or windows, etc. I might take a laser grip, but not any optic that precluded the use of the (luminous) iron sights.