high level design question

Greetings FR-users, I'm standing up a new RADIUS server that needs to proxy requests to both single and two factor RADIUS systems. I am looking for some feedback on my design. I'd like the option to configure local clients to either single factor or two factor auth. The proxy server I set up could listen on 1812 and 1814. Clients that need/want single factor auth will request to 1812 and clients that need/want two factor auth will request to 1814. With corresponding acct listening on 1813 and 1815. Is this sensible? Are there any standard FR configurations for working with clients to proxy to different RADIUS servers? Thanks for any feedback! -m