Need help unlocking Ulzuin's Torch

I’m looking to eventually unlock Meteor Shower and I’m unsure how to efficiently get there. The only constellation I deem as “needed” along the way is Solael’s Witchblade for the -fire res (using Fire Strike Commando).

For some reason I’m just really bad at working the constellation map.

Thanks!Q

Here is a pretty basic path to it. I pulled points out of crossroads when they weren’t necessary to maintain the other constellations. 15 points left for whatever.

https://grimcalc.com/build/1007-KUSbNG