[dtnewman]

> "show me how this handles 10K records"

Presumably the issue here is that you have customers with >10k records, but can't show them. Why not take their data and anonymize it, then put it under a fake customer?

> "what does error handling look like with real load?"*

I find it hard to believe that anyone is making an investment decision off of this question, but how would you demo this with a real customer anyway? Intentionally introduce a bug so that you can show them how errors are handled? Wouldn't the best course of action here be to just describe the error handling?