I’d go with the Zephyr as you’ll have more power options (if you get the aux battery bracket) and more adjustability with balancing due to the monitor and batteries being on different planes. I have a Zephyr and was able to fly a Panavised Mini LF fine, though it was admittedly a bit too heavy for the Zephyr (we were using Primo Artistes on it). With just the lens, some cage bits, teradek/wireless and remote focus you should be fine for the Zephyr’s capacity. Of course it all depends on how much the camera is rigged out so bear that in mind. I don’t plan on selling it right now unfortunately but check both the marketplace here and on facebook to see if anyone is selling at the moment.
Best of luck,
Jordan