Twitter Social Media Manager

I need a Twitter Account manager. You should have basic experience in marketing.

I need 5 accounts to be managed. Each account needs minimum 4 tweets a day.

This means 20 Tweets a day minimum.
The accounts are marketing and ecommerce related.

We use Twitter ---------- to schedule the Tweets. Please answer the following questions:
1. How many hours are you available daily?
2. How many days per week?
3. What is your prior experience?
4. What do you charge per hour?
5. All applications that don't answer the questions will he ignored.

Thank you