Re: Which Configuration? 4-SW or 3-PW?
Forget the set buy indvidual irons 6-PW.
Get 1 Driver
1 Fairway Wood - 3 wood or 4 wood no larger than 170-180 cc so you can hit it off the fairway, light rough and off the tee. Large than that makes it hard to hit out of the rough.
3 Hybrids to replace 3, 4, & 5 irons
5 Irons 6, 7, 8, 9, & PW
3 wedges 52, 56, & 60 are popular but get what you want for distance and don't forget to pay attention to bounce. On wedge usually 56 with bounce in 12- 14 range for sand. The other wedges should be lower bounce if you play firm conditions, such as 4-8 bounce. Some player are droping their PW for a 46 or 47 degree fourth wedge.
1 great putter - make sure it fits you and your eye really well you'll make most of your strokes with this club. The most important club to get fitted.
Remember even the pro's are replacing their long irons you really have to on your game to hit a 3 - 4 and sometimes even a 5 wood consistently. Forget the macho look long irons and cut strokes buy the hybrids and score lower.
And the best urthane cover ball you can afford to loose.
Keep it in the fairway