Need an advice from Cyclone professionals

I'm planning to league start as a phys Cyclone Champion on HC, but I never tried that before and I don't see any up to date guides around. The closest thing I tried is Ngamahu Cyclone Slayer and it's a lot of fun, but pretty much not viable.

So, here're my questions, would appreciate some answers:

1. Assuming I go for physical cyclone, do I always want impale? If so, how do I get 100% these days (after the bricked banners)?

2. What weapon type should I aim for? I've heard people use shockwave, but then it doesn't work with axes and swords. What are the good options in this regard and what uniques to aim for if any?

3. Crit or RT?

4. Good ways to get ail immunity with this archetype?

5. For support gems - I assume Brutality and Infused Channeling are mandatory. What else to look out for? Maybe some trans gems too?

https://pobb.in/DFGy_O6gxIJu

I LOVE cyclone and I'll be starting this above build this league. His suggestion is a great one to start Sunder https://pobb.in/eFWqRhN1OiSJ and then switch over to the cyclone build in maps when you have enough regrets to respec.

I've run a few starting tests and it moves nicely through the acts

I'm also looking to do Cyclone Champion as my league starter. Based on my research.
1) Impale - you'll get 40% chance from the skill tree, the remaining 60% from impale support gem. Theklar shows this is his nice POB that he shared.
2) Two handed sword with critical chance multiplier - Exquisite is likely the best.
3) Crit at end game, resolute technique while leveling up OR until you get the Worthy Foe ascendancy.
4) This one is tough...right now planning on pantheon, flasks, and some tree jewels...longer term really good crafting(?). :) If someone has a better idea, I'd like this too.

You can also trigger the HoA-minion with a cyclone set-up:

https://www.pathofexile.com/forum/view-thread/3529075

Great replies! Thinking about running the same way, still doing my PoB though so can't provide any input.

Thanks a lot everyone! I've had a thread in general too cuz this one was dead for a while, check it out if you are looking for more tips: https://www.pathofexile.com/forum/view-thread/3788699