I should let you know that, i’m not a Cryomancer expert, but here is my 2cents on the matter.
Wizard
Energy Bolt to 1. Level 5 just increases SP cost while providing little damage increase. You won’t be using this skill at higher levels so there’s no reason to overlevel it.
Reflect Shield to 5. I’m not sure if it stacks with Subzero Shield but, even if it doesn’t, it’s a very useful skill to have, may save your ass multiple times.
Sleep and Earthquake are ok, you can switch things up and go Sleep 4 and Earthquake 5 or you can drop Sleep for Lethargy.
Cryomancer
Frost Pillar. Not sure about this one but if ToSBase descriptions are accurate, level 1 is more than enough. Level 5 doesn’t increase freeze chance and the duration increase is minimal.
Ice Bolt to 1 would be a good idea since you have other hardhitting skills. Use it to freeze enemies from a distance, it’s attributes provides great freezing chance.
Subzero Shield to 10. Leveling increases freeze chance and duration making it recastable after the effect fades.
Gust 10. Subzero Shield or Ice Bolt buffed with attributes to freeze enemies and then blast the targets with Gust.
Ice Pike is ok.
This leaves you with 8 points in which case you could go Snow Rolling 5 and Ice Wall just for Cryorites.
It would be something like this: