change hostnames and move cp in multi server setup

[ressel]

Hello everyone,
My company changed name some time ago, and we are planning to move all our servers to another location soon, all our ispconfig servers are virtual, so it shouldn't be a problem moving them.

1. Can we without big trouble change the hostname and ip on all our servers ?
Even the master server, are there something we should be aware of when changing the names on our servers?

2.
Today our control panel is hosted on a all in one server with 2 ip's
ip 1 for all customer services, and ip 2 for ispconfig control panel,
we would like to create a new virtual machine and move the ispconfig control panel to this new virtual machine and make it our new "master" and control panel, and still keep our customers on the "old" server with only ip 1.
Is this possible, if so how can we do this?