I am not really sold on the whole Cryo3 for my Chron-Sage.
What are the pros and cons of pyro 3 over Cryo3? For Chron3Sage
I plan to do that same build as yours. But tbh, cyro-chron just seems so much better in terms of combos 
New fireball is fun with aoe burst, but the rest of the skills are kinda meh without Linker since they are multi hit DoTs. Worst of all dat c3 pyro breath skill… smh.
Now I am considering changing to cyro instead