We are having the same issue. I will definitely look into www.gorillalogic.com for our site.
Another option (which we overlooked) was choosing LiveCycle Data Services ES2 instead of BlazeDS. While BlazeDS met our functional needs, LiveCycle comes with a Load/Stress tool... something that we really could have used.
Here is the comparison chart:
http://www.adobe.com/products/livecycle/dataservices/compare.html