Has your AW profile been verified by the agency? Do you have access to it?
Absolutely DO NOT sign up with a "studio" or you'll be paying them a cut as well as the site.
When I first started camming my stats were the first month I grossed just under 2400 credits, so after AW's cut that's about 1575. That was working 26 days about 2-3 hours on the weekdays but does include 8 weekend days where I cammed pretty much all day. I found on average in the first two months I was earning an average of about 25 per hour I spent on cam. So to cash out 1000 on AW, you'd need to gross about 1500 before they take their cut. If you average similar to me at 25 per hour, it would take you about 60 hours. If you've got 2 months to get it together, then that should be easily achievable.