Awesome Virtual Assistant needed for a busy professional woman in Australia!

Hi. I am a part time lecturer and hold a separate full time job, run a society for women and also run a household with 2 children and so I am very busy and require support.

I am looking to set up a long term working relationship with the right person to provide me with assistance with the following:

1. Organise my calendar and email accounts for the day
2. Email my teaching material for Monday and Thursday evening by noon. I will share all of these files with you.
3. Email me all the University slides for my Law degree from a relevant links on a weekly basis
4. Develop more content for the website www.womeninoilandgas.com.au and photos / videos of events as required.
5. Write articles - maybe 1 a week for the website and newsletter on a fortnightly basis
6. Develop the blog for www.womeninoilandgas.com.au and contribute on a daily basis
7. Prepare agendas for my monthly 'Womeninoilandgas' meetings and take minutes and distribution to members.
8. Email event invites to our members, once in two months
9. Manage the Womeninoilandgas - Linkedin and Twitter account on a daily basis.
10. Writing PR articles for me as needed.
11. Post jobs on an online job site that we run and answer queries on that basis.

These are some of the activities that you need to undertake. It would be ideal if you have familiarity with uploading content and making changes to websites, however it's more important to me to get the right person who would know how to get this done through their own contacts, if need be.