Why not work your pitching wedge? If you choke down 1/2 inch, you can shave 10 yards. I played with a 47* PW and 55* SW for almost 3 years and got rather adept at working the PW. Almost along the same line as Stuart. You can also do a pitch with an 8 iron to cover the gap. You can also choke down by an inch with a full shot on a 9 iron or do a choked pitch with the 7 iron. I have the same wedge setup as you but SM3. I have a 50-08 bent to 51, 54-11 bent to 55, 58-04 and 62-07. I have AP1s 7-PW (I use an SQ2 5/26 and have a gap of 15 yards between it and the 7 iron). The reason I have the 50-08 bent to 51 is I want more bounce for long sand shots. I hit my AP1 PW 115 yards or so. My 50 gets 95-100 yards. I get about 85 with the 54, 70 with the 58 and 60 with the 62. I don't take full golf shots with the Vokeys unless it is absolutely necessary.

The 50-08 (mine is bent to 51) makes the longer pitch shots less work vs using a sand wedge and also allows the ball to bite on the green. It is also sort of a return to playing "old school" golf, given pitching wedges were 50* back then. 54 is a great wedge. The SM3 54-11 is probably one of the most versatile sand wedges around (I have mine bent to 55 mainly because of the comfort zone I have with a 55-12). The narrow sole allows for nipping the ball on a tight lie and there is enough bounce to get out of soft sand. 56 just doesn't do it for me. The SM3 58-04 is also a good wedge. The low bounce is a bit deceiving because the leading edge has a fairly high bounce. It plays like an old school sand wedge. I classify it as "nice to have" (you don't use it a lot but when you need it, it is there). The SM3 62-07 is another great wedge. It is good where you need a little more vs using a 64 x wedge and also works in a wider variety of conditions vs a 60-07. I would say most of my pitching and chipping are with the 50-08 and 62-07.