For starters, you are using the WGT Starter balls. They are by far the worst ball in the game. There are many opinions out there on which ball performs the best. The Tour GI-SD is probably the best ball for your experience level. The Callaway Tour i(s) or Tour i(z) are the best there are. I prefer the Tour i(z).
You're also using the WGT Beginner PW, SW, and LW for wedges. They too are by far the worst in the game. Court is still open on whether the Ping or Taylor Made wedges are the best. The majority will say Taylor Made. I use the Taylor Made Satin wedges.
As in real golf, a really good ball only gets you so much aside from less money in your wallet. Good clubs contribute significantly to how the ball reacts when hit. A good club and a good ball will garner you significantly better results. In the end, the clubs and ball you choose is what works best for you.
You might try renting wedges first. Find what works for you; you will notice a difference even with the Starter balls. Once your content with your wedge selections then try different balls until you've got a combination you're happy with.
Best of luck!
-Steel