2 and 3 look good to me.
Cryo3 Kino1 RC War = good damage, but remember that Ice Wall has a 65 second cooldown. Warlock hits hard, but also has long cooldowns. A better choice for DPS, but does not have much party support.
Cryo3 Chrono3 = good for parties because of Chrono support and good CC from ice. Damage will not be the highest though.
Cryo3 is in a tough spot for PvE right now. While it is nice to have, other classes have better class combinations that work well together. Cryo3 does not have too many options that help it out. Cryo3 Kino3 is a worthy choice too.