$2000 should be enough lets do the math:
$30x30(days there) = $900 (this is hostel stay)
you have $1100 for your spending the whole month. just to give you a rough draft on how much money you will have left. I also assumed the hostel stays a little to much I think. You could definitely find them cheaper.
Your trip should be great, get all your shyness out on your trip, and go out and me new interesting people out there.