I'm an odd ball that only carries 2 wedges (3 if you count the G10). The G10 Wedge I have is rated for 115. The Cleveland 60 degree is 80 yrds and I have the Z Satin L39+ rated for 50 yrds. With those 3 wedges I can cover anything from 120 yrds down. I know exactly how far each wedge will go and how much yardage is taken off with each avatar movement down.
For instance; My G10 with full bs 4 club movements down from full will go 82 yrds. My Cleveland with no bs full shot will go 81 yrds and the minimum yardage I use it for is 54 which is 5 club movements down from full with no bs. The Satin 50 yarder gets used from everything else.
I've seen it stated that guys don't like choking down clubs because they are inconsistent when you do that. I've never found this to be a problem. If I hit close to the ding each wedge will go the distance I specified in my backswing without fail.
With that info you might look at the following which you can fill all the gaps with two wedges like I do.
If I were you I'd get the Cleveland L29+ 60 degree 75 yard and the Z Satin L39+ 64 degree 50 yard.
If you're not above Level 39 then get the Cleveland L31+ 64 degree 60 yard and combine it with the Cleveland L27+ 56 degree 90 yard.
After you purchase your wedges set up a practice round and use each wedge with full bs and no bs full shot and then move down one club movement at a time. Write down how far each club goes with each movement and with bs or no bs. Hit each one a couple times at each setting to double check yardage.
If you get the Clevelands I wouldn't even use bs. I hit my Cleveland with no bs 95% of the time. The other 5% I only put a HAIR on it when the shot is heavy downwind. This may not be true of the lower level Clevelands and ball combination so you'll have to test them out and see.
Good luck