On AMP Setup -> Network page to change the IP address.
-The reason to change is that when you bring it up, you don't want 2 instances with the same IP, so changing it to a temp IP will save you that trouble.
The license shouldn't be an issue until the IP address changes. When standing up new instances, pre-empt the process with getting a license key first.
I'd add the reports you commonly use that aren't in the default daily reports.
Do not re-run amp install. Some reports, triggers, and RAPIDS rules will need to be updated if they are for specific folders or devices.