I was hoping VMC would be supported with Central but it seems it's not, you can only use virtual controllers with AWS/Azure.
Then I tried to configure 9004 as a VPNC in our DC to terminate VPN tunnels from another 9004 and this seems to be working fine. Even though Central manuals only say that 72xx is supported.
I tried it only with 9004, next I'm trying to add IAP to that 9004 and see if it works.
This is for labbing, as 9004 license is a lot cheaper to get than 72xx Central license. Other than labbing, I really don't see why anyone would want to get VMC in their own DC. Having something in the AWS/Azure with Central is a different thing.