I'm pretty used to a light racket now, having used DunlopAero500's the last 2 years. They're 10 oz, with a SW around 310. Fine, but now my shoulder is bothering me on hard topspin forehands, and hopefully, the bigger, much softer racket (a drop in over 10pts of stiffness), might help. If not, no biggie.
I just hope I don't lose too much on flat first serves.