rick.lang wrote: Looks like it’s feasible with only the need to keep shots fairly short (unless I added the Easyrig).
You may find it otherwise, at the expense of your back and knees. Long shots or short ones, if it's too heavy, it's too heavy. My gimbal adventures were with lighter gear than what you're contemplating, and even that was no fun. I eventually bought handles for it, which seemed to improve stability and made it easier to manage, but also made it heavier.
Where gimbals work pretty well is close ups on moving subjects, because the human in the picture distracts the viewer from all the lousy operating which quickly sets in. I'd also give up any thought of pulling focus. You want wide lenses and an aperture which gives you a lot of DOF, so you can't lose focus despite your best efforts.
And are you sure you can get an Easyrig to work with all this? The physics of Easyrig/gimbal seem like they'd be all out of whack. Steadicam was (still is?) making an arm and vest for one of the Ronins, you might want to check that out.