You are good in database design, back-end programming including JSON, xml and data handling. You prefer lean programming with good structure. You have at least some experience in yii-framework. Angularjs is a plus.
Project can be structured in different ways depending on your skills.
What is needed is to complete and finish the following
1. database redesign and normalization
2. script design xml/json parsing and saving in DB
3. management and publishing features of data to the page
4. management of the elements on the site
5. optimizing the web page to work fast and loading speed as responsive site
6. help publishing the site with necessary follow up