Thanks @PharmDawgg The plan is to have the R3 as the primary when it arrives and use the two Orbi satellites as the nodes. So after I set the R3 as the primary, I set the Orbi router as the AP, correct? And turn off wireless features on the R3. What else do I need to do?
oh and to connect the two routers together, Ethernet cable from the R3 goes into the LAN or the WAN port?