I haven't had good luck with the Warrior Forum for JVing. Many people promised the world but did nothing. For your effort, its not worth the time.
I've seen alot of successful JV come from this forum (Craig Beckta and Charles Kirkland come to mind as examples) though I haven't done at JVNotifyPro myself - later this year I will. From my time interacting on this forum, I've seen that Mike Merz really knows what he's talking about and puts what he knows into action.
Garland Coulson is right about building lists. I would add that if you create a relationship with your list your conversions will be higher. Responsive lists give you more leverage when trying to work with others.
I would also strongly urge you to have two products. An upfront one which sells for $100 and a backend product that sells for at least $500.