First thing, looking at your bag you're a club short, only one wedge, you need 2 minimum.
As for you're next purchase, consider this, more than half you're shots will be putts, so a good putter can really boost your game. A good short game is also very important, so if you can afford it, but both putter and wedges, lots of good wedges for 200 credits each, and they will last you a good while.
Others I'm sure will advise on exact clubs, but try to keep all you're meter speeds the same or very close.
Enjoy