I for one think you have a good gap between all your wedges.
Do you ever use the punch shot? If you don't I would really suggest it, as it would give you shot distances right in between the normal, full shot distances you already have. For example the 60 wedge's normal distance is 77yrds and the punch is 63yrds. (right in between the 50 yrds of 64 wedge) Remember though that punch shots fly lower meaning that even with full back spin (depending on the wind) they won't stop absolutely dead, so allow some space for roll.
As for controlling them, well that will just get better over time with the more shots and practice you have with them. The speed of the meter is also something you'll get used to, unfortunately when it comes to meter speed, you won't find any decent wedges with a slower meter.
Hope this helps,
Good luck.
EDIT : I just noticed that yours are the lvl 14 and not lvl 39 wedges. Yes, those are awkward distances. I've sent you something, give them a try. :-)