Upgrade Forticlient EMS 6.4.7 to 7.4.0

[SteveJW]

Hi,
A few months ago we acquired a new customer that we have to manage
Their current Forti EMS version is 6.4.7
I have read the necessary articles regarding upgrading from version 6.4.7 to 7.4.0
It is a challenge to upgrade de EMS server, and all clients(workstations and servers) to version 7.0.11, then 7.2.4 and then 7.4.0.
Wouldn't it be more convenient in this case to install/configure a new EMS 7.4.0 server?
Then uninstall the old client and install the new clients.

I am not (yet) familiar with the EMS tooling, so I do not know what the (im)possibilities are.
And what about the license for temporarily having 2 EMS servers?
I look forward to receiving advice.
Regards
Steve