It is great that you have chosen to go with a niche so it will be easier to rank your website and get some traffic. The first thing that you should consider changing is adding text spacing between the keywords in your tags. For example, you have the tag with the slug name bigtits tag, but it should be big-tits, so search engines can read it better and rank.
Also, there is no need to add tags such as sexy, tits, there are too general and if you include them in your videos like that, Google might actually lower your rankings for keyword stuffing.
Now, about the monetization. I would look for adult paysites that have affiliate programs and try promoting them along with webcams which should convert with your traffic.