Kerberos should be used, encryption is important and Userauth. The other Thing is, NFSv4 got now the Port 2049, this makes it ease to work with firewalls, than with the old one.
/home 192.168.0.101(rw,sync,no_root_squash)
This makes it ease to steal this share. So kerberos would be better.
Diffrences between rsize and wsize are absolut important, imo, the new one makes 32768 the old one 8192.

Greetings Seraphyn