I haven't tried the Stoeger coach gun but used to have the Outback. The only problem I had with it was that I lost the fibre front bead one time while clay shooting. It could have been thermal expansion of the steel sight that holds the fibre, and shooting a lot one day. I was able to find replacement fibre from some online source (not from Stoeger) and I put in a new one that was just as good as the old. You might want to take a lighter or soldering iron to the ends of the fibre to make sure it doesn't come out.
But it was my first and only shotgun at the time and I only had space/budget for one at the time. I sold it and have since used a 28" O/U for general hunting and clay shooting purposes. For the purpose you're describing, I think the Outback would do fine. I would think that fit is more important. If possible, try handling the Outback and coach gun, and see which one fits better.