Hi, there - I went through your brief and you need to have two security patches to your website. Please share which Magento Enterprise Edition you are having. So that I can suggest you best patches for the security, if you have a specific SUPEE version then share with me and I'll implement it.
About me:
I am professional and expert magento developer working since 6+ years and has a vast experience in magento since v1.4 now I am working on 1.9 and 2.0 since 5-6 months. I am confident that I can complete in your time-frame.
Feel free to ask anything you need to ask. i will respond quickly.
Waiting for your positive response.
Thank you for your time.
Regards,
Akash