Short barrels are nice for small tree stands and just still hunting in the woods. But in all fairness, I have used much longer barrels and found them to be just as good.
I guess you'd have to consider balance, and what kind of load you are going to shoot. I never shot a Pro Hunter or one of them barrels you are talking about. But it sounds like it would make a nice rifle. Plus you can always buy the other barrel down the road... right?