So I just defretted a bass today and I want to tune it in 5ths, CGDA, but I don't know what gauges I should use. The G and the D are new problem, it's the Low C and high A I am concerned about. Should I use a low B and a normal G string and tune them up, or use an E and a high C string and tune them down? Which choice will be better, more or less tension?