I had an interesting photo experiment of using several strobes at once on a day before Christmas. I usually use two, three or max. four flashes for studio shoots. My flash setup consisted of two fill flashes in front; one softbox and a stripbox, one 7 foot octabox for the main light on the model right, one flash with a grid for the face, one flash for the background and two or three flashes with grids for the hair light and to make a contour.
If you like it you can read some more about the shoot here: