login.ini file should read :
listen_port = 5999
if you leave it set to port 5998 you'll never
get in with sod client.
by changing them opcodes as you listed was a good idea
if you didn't change them your client would be just
sitting there all day waiting.
you're only problem is server setup make a few changes
be up and running soon.
eqemu_config.xml
<port>5999</port>
make sure you restart eqemu server after changes.