Despite being a gear freak I'm going to suggest you hang onto those credits a while and avoid having to buy too many clubs.
You have good irons already, there isn't much that will better them and offer a similar meter speed until you get to the Callaway irons at L85 and 97. Obviously L97 is still a way off so would understand if you want to jump on the L85 set. It won't take you as long to get there and they're damn near as good as the L97 ones.
I'd also wait a bit and get the Callaway BB Fusion at L85. It has a slower meter and costs a bit less that the Slider. There really are a lot of very similar drivers around that level, seems like someone forget to clear out the shop.
Wedges are a very personal thing. I've been using the high level ATV since they came out and will probably never change them. I found the spin on the Clevelands a bit too much and I prefer the 50 yards the 64 ATV offers. There's also no real reason to get wedges as a set, as long as you can handle different meter speeds and get the yardage gaps pretty even. Some of the best players here have used odd wedges over the years.
Good luck with whatever you buy.