Managing remote Unifi AP via Single CloudKey

Hi There

I just want to make sure that I fully understand this before I go and action it.

I am admining 3 remote site - all have different IPs and on each site - there are 2 APs

Site 1 - 2 APs + CloudKey

Site 2 - 2 APs - Dynamic IP

Site 3 - 2 APs - Dynamic IP

Each site has a different purpose and are all set up different 

I am wishing to admin the APs via the single CK. The CK at Site 1 works well and is allowing me to control the APs at Site 1.

If I am wishing to admin Site 2 and Site 3 APs via the Same CK....

Am I correct in thinking, I would just need to go back to Site 2 and Site 3 and do the "set-inform" function via SSH and point the APs to the CK IP Address??

Once they have been "set-inform" then I would simply log into the CK and adopt them from there?

Does it matter if the remote sites have a Dynamic IP?

I am in the process of setting the CK to a static IP (dyndns etc)

I just want to make sure that I am on the correct path before heading out to do this - as the sites are located some distance from each other.

Thanks for your guidance