You need to concentration more on your content. Keep update your content and make it original and unique.
Looks ok to me. Make sure you have useful content and I can not see why you might not be accepted. Blue themes are good for adsense....check WP theme Bluesense. Simple, ugly but effective. Good luck
About your SEO.... There is number of ways how to improve SEO. Onsite and Offsite. Check your site with www.woorank.com and www.markosweb.com they will give you some ideas about what to do.