Hi BevO,
I read your post and extend my kudos for your elevation to the Master tier.
Right now you are in need of some club advancement that will benefit you in the longer run. Based upon the conditions you have stated, with the best way of spending the 338 credits to your advantage, I see it this way: You can buy the G-10 Master 3 wood, rated at 235 yards. Or you can upgrade your irons one notch,for 300 credits, and they are quite good. If you go with the G-10, it will allow you an opportuinty, with one club, to get used to a faster meter, which with time, you will have to do anyway and it fills the gap of clubs, as you see it.