Power Portal - Environment

[SaraRao]

Hi,

I am working on building a power portal (currently is in Trial state) in a sandbox environment. Since am at the end of the trial period, I have to convert my portal to production. 

My question is  -

1. Do I have to convert my sandbox environment to production, and then convert the trial portal in there to production OR can I have a production portal in a sandbox environment ?

2. In case of a production environment, do I need to have the internal/external user licenses configured already (before I move my production portal to production environment) or can I do that later (once am ready to share the app with other users) ?

Thanks in advance !