If your PW is 47, and you have a 56, the 52 makes the most sense. What is your 9 iron? If 9 iron is 44, I would consider having the PW bent to 48. If it is 43, I'd keep the PW at 47. Either way, the 52 degree makes the most sense to me.

My average yardages:

44 PW: 95
48 GW: 85
52 GW: 75
56 SW: 65
60 LW: 55

Typically on an average day these are all plus/minus 10 yds. When I pure it, I hit 15-20 yds over these averages.