Sizing for HW and SW based

I am looking for a data for dimensioning for r5800 / 6000 etc where I am deploying DNS+PEM+AFM+URL Filtering + some iRules on ONE rSeries

The same witch I am looking for is for VE deployment 

Where I can find data about such figures

I can only find for DNS QPS, but for the rest of the modules can't  

Are there any exact numbers?

How can I combine and calculate this module and see if feet into rSeries and VE HP??