Hi, recently we bought our son a used Squier Stratocaster Standard, to which the original pick ups were changed to Alnico V single coil style humbuckers with split coils. Don't know the brand, even though they look like the Duncan Everything Axe set. I've looked at other stats and the pick ups look kind of low on my son's guitar. What is a good all around height that we can set his to guitar as a starting point?