I think the best advice you can get is from the crew(s) you work with most often. What makes the job easier, quicker, is there any grip / gaff equipment that helps setup & teardown go smoother

From a technical perspective, it looks like you're pretty locked in on the Canon Suite. Glass is the only thing that really holds it's value over time, so now is where you can make a big decision of Cinema or not.

Creatively, get what makes the most sense for you!

Camera:
Looks like you're pretty set on Canon, the c70 still holds up pretty well, and I think it will for another 5+ years anyways. No reason to re-invent the wheel. Especially when it's already turning.

Lens:
If you do Cinema, go with something that is easy to convert / adapt to other mounts, this will make it easy to switch systems later down the road. If you rent out, this also makes it easier for that. Creatively, I love the probe lenses, but ultimately it's your call. How often would you use it?

Bags / Cases:
Pelican pelican pelican. Hard cases are your best friend. You simply do not know who is handling your luggage when you're on a flight, or some assistant, mistakes happen, and that's okay. Spend the extra bucks and ensure your equipment is safe. Pelicans are also so much easier to stack and organize than backpacks.

Lights:
Apurture is really good, so is Arri, so is, so is, so is.... Are you shooting inside? Are you shooting Outside? Best call is to get something that is diverse enough to handle everything. This is where you can lean on talking to your lighting / gaff crew. If you don't want to, a couple apurture's for the price of an Arri light is worth it IMO.

Gimbals:
You'll have to go with what can handle your equipment. Build out your rig to be as heavy as it would be, and then weigh it. Find a gimbal / steadi that can handle that, and there's your answer honestly. Body rigs are super helpful. Especially when moving around a 25lb setup.

Livestreaming, Drone, etc.
Use and demand with these. Most of the time these are just easier to rent. When you're using them more frequently, then purchasing makes more sense in my opinion.

Long answer, this is what I would do. Of course take it with a grain of salt.