The effectiveness of a suppressor is dependent on the cartridge used. It is most effective on subsonic cartridges. If you can get a suppressor that would be the way to go for longer range. If all of the shots are close look at the Beeman R1 in 22 or 25 cal. One of the guys at work has one in 22, shoots through both sides of a 55 gal steel drum. And he says it is more accurate than he is. He's pretty good. Lots of pellets to choose from. Oh yeah its a pellet gun.
You can't fix stupid....however ignorance can be cured through education!