So, I have a 4 string Squier Jazz Fretless, and I really want to change the strings from EADG to ADGC, just so I can go a bit higher in my compositions, use different harmonics and the like. Unfortunately, I can't find strings like this for bass anywhere. Obviously just tuning all my strings up is a bad idea, so any advice on where to look? (Or should I just give up and buy a 6 String set and neglect the B and E strings?) Thanks in advance everyone.