To enable a design, you will need a bit more infomation.
Information on Server IO,
Processor utilisation
Memory Utilisation,
Disk sizes and actual usage.
Networks overview in terms of VLANS and Server traffic utilisation.
What are your application sets,
You have not received any help as nobody really understands how to approach your issue.
I recommend that you engage a specialist to run a Capacity Planning exercise on your environment and then you would have some information on which to base your design