even though the iApp for ADFS is deprecated, you can still follow the archived deployment guide. The config parameters and values described in Appendix A: Manual Configuration tables are still applicable. Your use case is described in the chapter named Configuring the BIG-IP LTM for load balancing AD FS or AD FS proxy servers: SSL Bridging.
From my memory - pay attention to the server name in the serverssl profile. ADFS requires SNI.