Working with 500000 records on Web Intelligence

Hi Experts!

I'm using webi over BEx query. I'm working with a big report on webi, my client want to use Webi, but the query results is very big, between 100000 and 500000 records and I think that data volume is too big to webi. I think to use the Crystal Reports for Enterprise, it is more robust tool to work with a big data. So:

- There is a configuration on CMC to grow the cache to webi run with that big data?

- Crystal Reports is better tool to these case?

I'm working with SAP BO BI 4.0 SP6.

Thanks!