I stumbled upon your post and felt compelled to weigh in because I've had some frustrating experiences with this specific body recently. The X-H2S is powerful, but unfortunately, the current accessory ecosystem isn't as polished as it looks on paper.

• Regarding the cage, the SmallRig Full Cage for Fujifilm X-H2S 3934 was quite a letdown during my last long-form project. The clearance for the articulating screen is poorly handled once you have an HDMI cable secured. I suggest looking at the Tilta Full Camera Cage for FUJIFILM X-H2S Black instead. It's built with more precision and doesn't impede the camera's natural movement as much.
• The audio situation is even more problematic. I've had issues with the Tascam CA-XLR2d-F XLR Microphone Adapter for FUJIFILM being far too power-hungry. On a wedding day, you can't afford to have your body die in the middle of a ceremony. A more professional alternative is the Zoom F3 2-Track Field Recorder. It's more reliable, offers 32-bit float to prevent clipping during loud receptions, and doesn't drain your internal camera battery at all.
• For media, I've seen people struggle with overheating using budget cards. I recommend the ProGrade Digital CFexpress Type B Gold 512GB. It's consistent and manages heat much better than the cheaper alternatives I've tried. Going for the Tascam adapter is a compromise that usually leads to power anxiety during an 8-hour shift. Better to stick with dedicated solutions.

In my experience, you're overthinking the cage brand. I've tried many setups over the years and simple is usually better for long wedding days. Before I give you a full list tho, are you planning to shoot this handheld the whole time or are you throwing it on a gimbal? That changes everything for the handle setup. If you want to save some cash, skip the expensive adapters for now and look at these:

• Rode VideoMic NTG Shotgun Microphone for solid scratch audio.
• SmallRig Foldable Top Handle 3765 because it actually clears the flip screen.
• Anker 537 Power Bank 24000mAh 65W to keep that Fuji topped up via USB-C between shoots. Basically, dont sleep on the Lexar Professional CFexpress Type B Card 128GB Silver if you need more storage but want to stay under budget. You dont need the top-tier gold cards just to get through a wedding day, ngl.