A full set would require a decision on how and when you would use each wedge. If you are going to keep your current iron's PW, which is usually standard loft of 46-47 degrees, then you could add the GW at Vokey's recommended spacing of 4-6 degrees, then the 50 , 56 , 58 range would work. Adding the 48 would replace your current PW. As to your swing the lofts would benefit gearing towards more bounce in 12-14 range to alleviate too much digging, allowing an easier turf interaction. Do not forget again about their intended use which would favor the fuller swings with the 48 and 52 degree wedges having the same stiffness as your regular irons, since these will most likely be used for fuller swings. For example, if you consistently average 140 for your PW, the 52 degree GW would fit in your gapping range of 120-25 with a full swing. The higher lofted wedges could have their shafts reduced in stiffness, say a Dynamic Gold S400 for the added feel around the green and the traps which induces a more manageable spin on finesse shots. The SM11's are wonderful wedges when used for their intended purposes and having a more varied toolbox for those tricky 30-85 yard shots is where they shine. Good luck in your decision for they are an investment worthy of valued discernment.

44F set to 42. 52-12F set to 50. 56-12D set to 55. 58-04T. 42-50-55-58. I carry Bunkr 64 for courses like Torrey Pines.

48f
54 (whatever grind you prefer) bent to 53
58

Gives you 5 degrees between avg club for gapping

42-50-58K-58T-64. Trade-off between 58-12K and 56-12D. Bunkr 64 first shot. Holed out 14th hole. Close to my 2018 Torrey Pines line up gap wise.

Other option is 42-50-55-58-64.

56-12D (55) vice 58-12K.