A little help with shafts?

[mikerish]

Not sure if you can help me or not...I have a conventional set of Rocketballz irons currently with the normal 85gram shafts. I have a driver club head speed of 105mph and my 7 iron averages about 95mph...the trajectory I hit the ball was tracked at being much higher then normal so a club pro told me to look into a heavier shaft to get a lower more penetrating ball flight. I was thinking of going with a stiff true temper dynamic gold s300 with a weight of 121 grams. Being a novice, this is the first time I have stepped into the shaft arena. Any help would be greatly appreciated.

[mvmac]

At your speed that shaft would probably be fine but I would first demo a RocketBallz (or iron similar) with a DGS S300. It's a common shaft and most golf stores have iron heads with a variety of shafts.