"What you really need to do is get springs to suit the cams you were planning on useing."
There is no better way of putting it. If you are going to run stock cams then run the springs that correspond to the particular grind. Or, use the cams and springs from the head that already runs double valve springs. If you are getting your cams welded and re-ground to better suit the turbo then get the person/company who regrinds the cams to specify the correct springs.