It is difficult to define the density,because the density depends more on the hair length,wave,curl, color and so on.Density below is only for your ref.
Normally, people like the density 80%,100%,120% for lace front and full lace wigs.

50% very light density	80% light density
100% light-medium density	120% medium density
150% heavy density 6	180% heavy heavy density

Or you can tell us the different density in different area shown as below