ESXi vSec aka CouldGuard recommendations for a small site

[Kaspars_Zibarts]

Just wondering if anyone running gateway and management in ESXi has any recommendations. We are planning to deploy sort of simple  remote site with management and gateway (not in hypervisor mode, just plain gw in VM) in ESX. Same ESX will host few servers. What would be the best approach - standalone gw & Mgmt in one VM or create two separate VMs - one for GW and one for Mgmt. No need for cluster. I don't expect too much traffic new connections wise. Throughput could get high-ish but purely for file transfer. Don't need any advanced blades, just firewall as IP filter. Any suggestions for number of cores / RAM? Either in one or split VM case. Never really run vSec gateway in production especially standalone solution so need someone with practical experience. Deploying as R80.10.