If you never worked with "actual Highspeed-Cameras" before, i would highly recommend you to find a way to test one before you go and buy one.
Highspeed-Cameras are really a much different Breed from almost anything else in Cinema- and DSLR- Camera World.
I personally never got my hands on an Vision Research Phantom Camera, but dont even know if those would allow for Playback of previously Recorded Clips. From what i know and have seen, most or all Highspeed-Cameras that Save to RAM usually just let you play back whatever is in RAM, and once that is saved to Flash or SSD Memory, and gone (either a new Recording now in RAM or Camera has been Restarted and RAM is now Empty), it cant be played back on Camera anymore, and you need to Review that Footage from PC.
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If your Butget allows for that, might consider Looking at the "Freefly Wave" Camera.
https://freeflysystems.com/wave That one is probably one of the more Familiar Cameras in terms of Workflow compared to a Traditional Digital Cine-Camera. Anything else you will need to have considerable time planed to save your Footage to permanent Memory. (always depends heavily on the Length of Clips you are going to Save, a Full Memory Save on a 32GB Chronos takes what feels like Ages).
Now, i also dont know, if the Freefly Wave would allow for Playback of Previous Clips (kind of has to, as it, from what i understand has no RAM, but saves to SSD Directly. so to playback anything at all, it would need to be able to read from there as Well and Play any clip on there?), but in your case, where you probably would mostly or exclusively use 1920x1080 or 1280(1440)x720 at 1kfps / 2.1kfps on the Chronos Anyways, the Wave Camera would at least allow for a bit more Framerate, higher Resolution if needed, and no additional Time needed for Saving Footage.
For The Higher End Framerates (5k+fps) and more general Highspeed-Use the Chronos is just generally better and Flexible, but as a pure "Cine-Style" camera for Mainly Studio use next to a RED, the Wave would probably do better.
So, would be a good Idea to test in my Opinion, as Highspeed-Shooting might also still has a bunch of more Nasty Surprises prepared for you, if you never worked with Highspeed, among others The Insane Amount of Light needed, Fan Noise, and a Bunch more not quite as Obvious ones.
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As i was somewhat curious about the Wave Camera anyways, but never had an Actual need for anything alike, or even Time or money to ever buy one anytime soon, i so far have not looked further into it.
But as there is currently one offered to Rent from A Rental House in Germany, and its not even that crazy expensive for a Day, that would be a good excuse to maybe finally take a look at it for me.
I dont know where you are from, but if you are from Germany or anywhere near Germany, i can offer to meet up somewhere somehow, and you could test them Both for your use.
Pretty sure, you would be able to find someone with a Chronos who would let you have a Play with it for a bit anywhere close to your Location, even if you are far from Germany.