Tee,
I second what PB said. I do not shoot 10 under, but I play consistently around par, and hold my own in match play (win a few, lose a few). One thing I would recommend however, go straight to the R-9 driver (275 Yd) & 3 wood. I struggled a lot with the meter speed moving from the Rapture to the R-9 when I moved up to Master. Be patient, it will take TIME, but the sooner you make that adjustment the better off you will be. I find the Rapture irons to be just as good as any I have played, and their meter speed is very comfortable. Good wedges are a must for the most important part of your game, the short game. There are lots of choices, but I have found the Z Satins priced fairly, and just about as good as any of the others.
As for the ball, I know many, many players will disagree with me, but I do not find the Callaways all that exciting. I play just as well with the free 'Dove' ball (GI-SD) or it's equivalent WGT ball. Again, the price is right.
Putter???? Good luck! I use the Spider, and have thoughts (at least once a week) of changing. I don't think it is the putter, it's the "Puttee". I guess I make my share, or I suppose I wouldn't shot around par. There is no magic, it takes practice. Use the putter you are comfortable with.
As I said, just my opinion. Good luck and enjoy the game.