To add to that:
from my user config dat:
image_modules string scw,wol,gar,nyb,ccw,exp,lfm,old,ofg,alm,tot,crc
(thats not the order, thats just activating the packs that are installed)
pref_image_modules string scw=0,dstu=5,exp=10,tot=45,lfm=60,ofg=40,ccw=15,nyb=20,alm=20,gar=25,old=50,crc=10,wol=100
The first line shows pretty much every pack that exists enabled, exception is WOL, that is a pack that consists of my edits made from older packs(pack versions), that have their models tweaked/exchanged or just doubled some others and renamed and edited them a little.
The second line show the priority from which the game loads the pics, with 100 the highest and 0 the lowest.
As SCW has the most pics its loading less frequent to give me more variety and my WOL privates are often used for the initial chars, sisters and co, which is why its at 100 and that how you can sort that to your preference.
You can also increase the amount of selectable chars for your char creation:
init_mc_image_choices int 500 (thats usually at just 25^^)
with that massive amount available, there will be all chars shown that fit to your selected criteria, tho that also results in a massive clicky orgy, to get thru them all.