Hi, I'm thinking of getting a 5-string bass and achieving C standard tuning by tuning the top four strings up by 2 semi tones. The other option is to downtune a normal 4-string bass but that would be downtuning 4 semi tones and it was really hard to play as the strings were quite floppy. So my question is, how viable is it? Will the neck be able to take it? I'm probably going to leave it at C standard tuning all the time.