I didn't see anyone give a perfectly clear answer to the original question, but I also skimmed. This is my first time posting to forums, so forgive me if I'm too late. Yes, you can have most dealerships put the TRD Pro suspension on a Trail and keep KDSS. Not the most cost effective, but you can.
You realistically wouldn't need both though. One or the other will be good enough for what you need it for. The matte black will be more difficult to keep clean looking as it is just harder to clean. That didn't stop me from getting a Pro because I didn't want to modify the suspension at all, and I love the look. So for me, it's perfect. But the Trail and the Pro still have the same exact engine, 4wd system with off road features. It's just simply the suspension and tires that are the mechanical differences. You can get tires after you purchase it. I really like the Nittos on it and have had a good experience with them both on and off road. They clear out the sticky clay I've been through.
Good luck with your purchase if you haven't already made a decision. Your dealership will also be able to give you clear answers to what you'd like to know. Mine did at least.