Install a new vcenter Server

Hello together,

I have a quick question regarding my VMware setup.

At the moment we have an active vCenter installed with version 5.0 and will soon update to version 5.5.

Before doing that, we want to implement an pilot project of VMware Horizon View with a seperate vCenter server actual version (5.5).

Now I want install the new vCenter server for Horizon View withs it's new features (SSO, Inventory etc.).

So would this be a problem if I do this now, and update my other vcenter Server later to the current version?

And would it be good, to install the SSO Server component to a seperate machine??

Thanks for some suggestions.