Glad to hear that you're going back to the sport! What type of playing do you plan on doing? If your DM is working as good as you say it is then i really don't see much of a reason to upgrade. It's a great gun and probably does what you want it to do.
It's pretty cool that your wife is interesting in playing
a quick google search led me to this:
not too bad of a price but layers, a well padded bra, and baggy shirts would probably do about the same. Good luck!