I have two cheap basses; a Hohner P copy and Yamaha J copy, both fretted 4-string. I am keen to try changing the strings of one from EADG to BEAD i.e. the bottom four of a five-string set. Obviously this will require some work on the nut first. I would be interested to hear views on this, especially from those who have done this. Which instrument is likely to yield the best results - P or J?