Well, I am no rep but looking at your "demands" I would think that webcams.com fit's that pretty good, you should get a hold of Jago and discuss it, I'm sure he can get this set up for you.
It will blend in on your site with a whitelabel Including your logo.
As far as I know they don't send your traffic off anywhere else.
They have many live women 24/7, definatly top 5 in biz I'd say.
Real lifetime revshare or good PPS.
They are reputable.
Many American girls and English speaking girls as far as I have seen.
Jagos ICQ: 979114
To top it all off, here's a shameless plug for my ref, lol
webcams.com