For step 2 no.
To be put behind our load balancer, namely an F5 LTM on v10.2.4 the load balancer requires its own virtual IP to accept connections on and then it chooses from a pool of destination IPs you've entered to spread the load across. The FQDN horizon.mycompanycorp.com maps to the virtual ip 10.x.2.28 and the gateway itself has ip 10.x.2.91 with the name gateway-va.mycompany.local in dns pointing at 10.x.2.91.
This is the same type if setup we used for our standalone Application Manager environment.