Here's some ideas for you.
*Adult Affiliates (like Brazzers, etc) - free content/videos - etc.
+ potential recurring revenue for subscriptions
*Keep a Rude banner or two on your site
*You can use a PPC like BlackLabelAds or etology, but don't expect it to make much - they pay shithouse for clicks. If you use this make sure you use full-page ads as well.
*Link like crazy, the only real way to get traffic is truckloads of links with adult blogs and tgp gallerys.
*If you want a short decent influx of traffic, submit your site or your gallery photos to The Hun (thehun.com) and (thumbs-up.net). Make sure your site is optimised when you sign up.
If you want to do a reciprocal link with me when your site is done, PM me - I started a adult pic gallery a few months ago for something different.
Good luck mate.