That's exactly what combination I'm doing. Already have a TTS Mastertuner and the cans. Just bought a DX pipe off a member here. I will have it retuned to hopefully get close to the same level as the Drago's 2 into 1 that I'm replacing, 125 squared. The Drago's seems to be getting louder and hotter. So hot my wife's right shoe melts the sole. I'm a big Fullsac/Steve Geroge fan and think he has great products and service. I might ride over to Lake Havasu and have Steve do the tune. Fullsac had a video that did a big cam, header and muffler test. This combination was one of their top choices.
I almost forgot to answer the OP's question: This combination will be louder than stock, but not near as loud as the Drago's 2 into 1 that I'm replacing. For you going 2 years stock, you are in for a delight. This will make a new bike that you'll love to ride. If you haven't planned on a tunner, you will definitely need one. TTS or Powervision seem to be the most popular. I also would highly recommend to add a cam of your tuner's choice, they are not very expensive and make a big difference. Also, easy to put in.
Cowboy