I submit daily to the following with FREE sites....
http://www.smutgremlins.com/ http://www.markslinks.com/ http://www.freepornlist.com/ http://www.link-guru.com/ http://www.findpics.com/ http://www.4adultsonly.com/ http://www.adultsexentertainment.com/ http://www.tommys-bookmarks.com/ http://www.link-o-rama.com/ http://www.koolkatlinks.com/ http://www.sexual-linkage.com/ http://www.sexclearinghouse.com/ http://www.alcoholinks.net/ http://www.wetplace.com/ http://www.sexynexus.com/
And I think that PK allows like 2 sites per webmaster. I'm not sure about the rules at Richard's Realm but he requires paid hosting... yada yada yada.
Build 7 free sites and 1 AVS site. Get your AVS site activated, then submit 1 free site daily to all of the above. Use the free sites to promote your AVS sites. Do it weekly.
If you get listed within 24-72 hours at all of the above, then you can expect 14,000 (better than tgp quality) uniques in the first week across your 7 sites. Do this weekly like I said, and you should soon be making some $.
Keep it up for a year or so, you'll start to get SE traffic on old sites... more signups and if you start NOW with quality sites, by next year if things are well you should be able to think about going full time.
But it takes hard work. The sites have to have the correct marketing techniques.
Another piece of advice is don't just chase "babes", "hardcore" or "amateurs" all of the time. Pick a special niche that you enjoy... bondage, face sitting, smoking, pregnant, trans, black, asian, cumshots, whatever. Even try the gay market... gay teens, bears, etc.
In the end you'll have some sites that make $200 month and some that make $2/month profit. Just work at it day after day, week after week.