Social Media poster for Wedding Related website

I currently run a wedding entertainment company with a Facebook page of 500+ fans and a twitter account with 250+ followers.

I would like to find someone who can post on Facebook 2 or 3 times a week and tweet around 10 times per week.

Facebook posts can be an interesting wedding advice guide, a wedding related article, new piece, or possibly entertainment related. Ideally with a sentence or two per post ideally posing a question or encouraging some kind of social response (a like, a comment or share).

Twitter posts again similar lines of the facebook, but can also include retweets

Every now and again a post relating to something on my website would be included as well.

General success would be measured by some of the point outlined on this post: http://www.kaushik.net/avinash/best-social-media-metrics-conversation-amplification-applause-economic-value/ particularly:
- Social Media Conversion Rate which is the number # of audience that either replies on twitter or comments on facebook
- Amplication Rate which is how often something is shared on facebook or retweeted on twitter
- Applause Rate which is the number of favourites on twitter or likes on facebook
- Social Connection Rate which is the number of fans increased on facebook or the number of followers added on twitter.

Not quite sure how we will run this, but most probably through hootsuit, unless you have any of your own suggestions