Yes to BSSV
No to RTE. You can't load balance RTE unfortunately, thats just the nature of RTE ! However, it is possible to have a "hot backup" instance of RTE available in case the primary goes down...
I load balance using the BSSV URL making sure that there is persistence turned on. It should really be no different than load balancing a standard HTML server. Create a DNS record and set up the load balancing at the F5...