From what I read you are saying that you already own two BBW paysites? As far as promoting them I would definitely take the advice here and start making free sites (instead of tgp galleries) to start with.
There is a much better conversion rate on the free sites, you will get accepted faster (especially if you get yourself known around here) and there are a few experts on that niche that are moderators on this board including the king of BBW traffic in the biz (Mr MaryLou - who runs that Saturday chat session that was mentioned earlier)
You found the right place for your questions and as already said- make sure you ask them - of course the search feature here works extremely well too
As far as the affiliate program part - my old rule of thumb is that once you have your own traffic building part down pat and take a look at your retention rates is when to start looking at that - until you have those numbers you would be doing ourself a disfavor by opening it up to affiliates