My situation is similar to yours in certain respects, and I don't claim to have found the best answer yet. Carrying presents some problems which demand trade-offs one way or another. But what I've used thus far is a 2-1/4" SP101 in a Mika pocket holster. I know that this is not an ideal set-up. For one thing, as has been touched upon, it's difficult to find trousers with sufficiently large pockets to fully conceal the gun. What I do is cant the holster so that the butt of the gun is further away from the opening in the pocket. A plus of this trick is that the fingers seem to have more room to get around the front of the grip when the gun needs to be grasped quickly. If, however, you have the model with the hammer spur(SA & DA), snagging the pocket material on the way out may be more likely.
The gun itself is pretty hard to beat in my view(but then I have no experience with the others, so you can take that statement with the proverbial grain of salt). I don't mind the weight, I just draw my belt in a notch to keep the trousers from sagging on that side. I use magnums, which, with practice, can be placed in a 3" circle at 21' with not too much difficulty(one has to keep practicing, though!). I regularly exercise with a spring-loaded device which strengthens the fingers, hands, wrists, and forearms; this helps in shooting magnums in a small gun. I've gotten to the point where I really don't notice the recoil that much.
I have a feeling that you would be disappointed with firing shotshells in one of these short-barrelled outfits. But then, again, I've no experience with them. It just seems to me that the shot would scatter so quickly that the snake would just feel a sting or two and get upset at you.
Well, it's getting late and I have to quit. I wish you well in the choices you make.
Andy