You can actually get a decent amount of photo content for $250-$500 from smaller companies that arent all over the web and would look pretty exclusive to most members. You just have to negotiate for it. Email me if you want to know who to look at.
You can negotiate so many things within a paysite, assuming you have something to negotiate with.
Our gay leased content package contains 1 live voyeur/sex show feed and 4 pre-recorded streaming niche feeds, gloryholes, barebacking, str8 guys, and showers, and a new site can get it for $250 for the first 2 months.
$1,000 is pretty fair for a full site design.
Go with a payment processor and you wont need any programming initially.
Work the site yourself for a few months at least before launching it to affiliates. If they kinks arent worked out, they wont come back.
Good luck!