i hope you have your keyword in both title & url...if not try to have that in title (u cant change url now except creating a sub-domain with the keyword or additional pages with keyword).....i hope u have your k/w sprinkled all over the content.....
Furthermore what you can do is try to post the related content in the high PR sites i.e., ezinearticlesn all....as u said no.1 has PR4 so if you can have your link on a PR5 or above webpage; u'll be fine......
for monetizing: Use affiliate products rather adsense....(when you can have dollars in commissions, what's the use of settling for cents).....furthermore, u can also build your email list from the site....n so on....
hope it helps..
take care n happy new year.