Agreed with Leonais, the thing will be to get the same amount of point than custom start. The extra bonus would be to somehow randomize stats so that there is some changes from one run to the other and force different style play (like shuffling the 5,3,2,4 values around instead of a randomize that might get above the max cap)
My personnal opinion about racial stats : the way I see it now is that the dev designed them to create advantages in the early game, but become insignificant if not null in the end game (for exemple, an elf will just reach magic cap faster). So bothering with it for a very custom algorithm might be a waste of time...