I have never been a big fan of Taurus, but I do like the idea of "The Judge" with alternating shot and lead
Personally, when I am hunting here in PA, (we've got Coyotes, small cats, and also bears) I carry my .45 on my hip with +P ammo, with two spare mags (25 rounds), along with my "pocket carry" .40 S&W with +P ammo (6 rounds).
What gun do you shoot very proficiently? I am not sure the 9 mm or even the .45 ACP is "enough round", but it is hard to argue against proficiency, especially if the first round from the .454 Casull knocks you on your keister. I think you are on the right track with your 9 mm.