It will depend on how far advanced in liver disease he
is and whether or not the doctors believe he can
withstand the long hours of surgery (with his heart
condition). They sometimes do multiple organ
transplantations at one time.
If you want to read about the transplantation
process for both the liver and the kidney,
here are a couple links you can click on:
http://www.surgery.usc.edu/divisions/hep/patientguide/index.html
http://www.usckidneytransplant.org/patientguide/