You may want to put sym-links to these in a main directory like $USER_INSTALL_ROOT or your home directory.
$USER_INSTALL_ROOT/config/cells/<NODE>/nodes/<NODE>_<INST>/servers/server1/server.xml
$USER_INSTALL_ROOT/config/cells/<NODE>/virtualhosts.xml.
$USER_INSTALL_ROOT/logs/server1/SystemErr.log
$USER_INSTALL_ROOT/logs/server1/SystemOut.log
(Contrary to common sense, SystemOut.log has most of WAS's "error" messages). (Note that many files in $USER_INSTALL_ROOT/logs are in binary format).