Security Fabric and logging advice needed.

Hello,

I would like to ask for your advice on how you would configure logging on Fortigate routers and whether it is worth enabling security fabric in such a configuration:

-one main Fortigate and Fortianalyzer in the main location.

-four Fortigate routers at the branches connected to the main Fortigate (hub and spoke topology) via doubled IPSEC (SD-WAN).

-the remote Fortigate routers do not have UTM licenses because all network traffic is reversed and goes out to the Internet through the main Fortigate router.

Now how would you configure the security fabric and logging in this case?

1. Security fabric disabled, logging into Fortianalyzer only from the main Fortigate (here, traffic to the Internet is visible from remote Fortigates anyway) - this is the current situation.

The downside of this solution is that in order to check local traffic, I have to log in to each of the branch  Fortigates.

2. Security fabric disabled, but adding remote Fortigates to Fortianalyzer (there will be duplicate logs here)

3. Enabling security fabric and adding remote Fortigates to Fortianalyzer?

Thank you.