OPNsense Routing and Firewall config.

I have a half rack in a data center with multiple subnets on a single interface going into a switch. I'd like to add OPNsense so I can divide the subnets further as well as use some of the firewall features. Simple diagram of the setup now and once the OPNsense router is installed: [login to view URL] Additional features would be to have multiple inbound routes and multiple VPNs for remote admin access. I'm using Dell R620 for the router and Dell PowerConnect 5524 and 5448 and 6224F for fiber. I'd like to be able to configure the router and understand it before deploying it with the final config. If this is a project you'd like to work on with us, please let us know. Thank you.