First - it overheated. Then came the fun.  Oil leaks. Found split push rod
tubes. Then discovered bent push rods. Next a loud tick or clatter that
won't go away no matter what - so bad lifter perhaps the result of
overheat. Now discover coolant in reservoir going down while overflow
reservoir filling up - meaning a blown head gasket. What next?

At best this calls for head reseal with new gaskets  and a valve job on
each head. At worst, since it was overheated, a rebuild or replacement.

Are there other considerations I should make?

John