Rhinos are easy first blood victory points in 8th ed, so don't count on them too much.
For points efficiency, swap out the L3 Librarian with an L1 Mallus Inquisitor Lord fully kitted out. An L3 Librarian could be overkill for psychic powers, but an L1 Inquisitor Lord only needs one power, Prescience.
I don't know about the Eldar Corsairs list. If it's not an offical GW codex but some online list hybrid, don't be surprised if opponents start calling out shenanigans. I faced an "adeptus mechanicus" list someone "got" from an online site, and it was broken beyond belief.