The thing about having a shorter barrel comes in when you're shooting through windows and such. It just adds seconds to your time when you have to shove all that barrel through a window and adds even more when you have to pull it back through. It can also be a hindrance in situations where you have to go around stuff or if you're moving through train cars and narrow places.
Something to think about.
Get you some back up ejectors and keep them in a tool box that goes to the range with you. It doesn't hurt to keep a left side extractor close by either.
Have you started practicing with it yet? How are you going to load, over the top or from the right? Get good habits from the get go. When you are shooting a '97 it shouldn't come down off your shoulder until you're done shooting it. You shouldn't have to look at it to load it either it should be automatic. Get the stock fit to you. From your avatar it doesn't look as though that's going to be a problem for you though. My stock is down to about 12" now I think.
If you make dummy shells to practice with get some shells that are some color that you will never ever have live ones in that color. My practice rounds are lavendar.