At the start of the season , go full blizz if you don't mind skipping cold immune areas or hydra orb if you want to clear all. ( Telekinesis+ Merc handles double immunity)
Once you have good enough gear , swap .
I think infinity is a good turning point.
Crescent moon / sunder are good turning points too
You can also go enchant /orb at start season use a throwing knife, passion RW, or a demon machine/any bow or xbow with exploding arrows and dual spirit on switch to precast/use orb