Do you plan on buying sunglasses and ear buds? Cause if you shot that thing, especially at night, you're gonna deaf and blind kidding
You may want to look at .44 Special for self defense. In fact, the link you provided for the glassers, I thought were the .44 Special but I could be wrong.
Those can be fired in a .44 magnum revolver, but like the .38 Special/.357 magnum relationship, you can't fire a .44 magnum from a .44 special revolver.
I think you'll be fine with what you found.