virtual assistant for website marketing

Hi We have a niche ecommerce website aimed at British expats living in Europe. We need a virtual assistant long term who can assist [login to view URL] need some one who can work between 10-20 hours per week doing various tasks which must be performed Mon - Friday every day. The tasks are 1- writing 6 Seo long tail articles of 500 words per article per week, on various products on our website keywords to be provided by [login to view URL] must be able to write excellent english. This is very important. 2- I have 2 wordpress blogs which need 4 articles per week optimised and posted on them 3-the other 2 articles you will write need to be posted to article directories like Article bot and then be posted on article websites like Ezine articles and Go articles, then spun and posted on Isnare and Buzzle with backlinks to my site 4-We have accounts with Facebook and Twitter which need attention. They both need at least 5 messages posting to each account per week and we require a minimum of 1000 Facebook and 3000 Twitter fans/ followers per month. The followers must all be British expats living in Spain/Europe. If you achieve more than the required numbers per month you will receive a [login to view URL] followers must be long term and no black hat methods may be used. 4-We also require you to be able to post on 20 British expat forums per week the details of which we will provide. The posts will be letting British expats know about our website but will do this without trying to sell to [login to view URL] spam You must have experience in forum posting, SEO article writing, word press optimization, article submission/marketing. This process must be repeated every week and must be consistent. We will require a excel spreadsheet report on all work done at the end of each week. you will be paid on a weekly basis for all work done. Please bid for this work on a weekly basis and include the words expat shopping in your bid so i know you have read all the project info..