Hello,
Hope your doing Great!
I just reviewed your job description and you required help in regards to CMS system we have good number of experience over Wordpress CMS.
I suggest you to get connect us over the PMB so we can discuss further.
Kindly also provide me current website URL, and its admin,FTP details so we can review the code.\
Brgds
Charlie
Note : Cost will be change depending on the functionality.