OK I've made progress... I unregistered my new appliances while the old ones were on. Turned those off. Re-registered the appliances and it's connect. I have one last problem...

Operation Failed
vSphere Replication Management Server could not establish connection to remote vSphere Replication Management Server at 'remoteVSRA:8043'.

I'm reading KB about it saying I need to get into the DB and clean it, but it's referencing MSSQL so I think that's an older one. I've unregistered everything so the new IP shouldn't matter I wouldn't think. Going to keep chasing it, but I've gotten over the biggest hurdle. 

Edit: I rebooted the VSRA and it's looking better. Doing a test replication now to see what happens. Fingers crossed!