I would just get them fitted.  You can play with the heights later - it is easy, you just need a philips head screwdriver!  You might get a really intersting sound for country blues with a reverse stagger as it will bring the G up a bit, but it will not overpower anything.  My Apache set has the original 54 stagger, which puts the G lower and A higher, and they sound great.  I really don't think you will notice the G.  If you do, you could always try droping a gauge on the string.