To add to the point above: after shooting weddings for about a decade, I've found that keeping things modular is the only way to stay sane. Going through a phase of over-rigging taught me to keep the S5II setup pretty lean. For the ceremony power issue, I stopped messing with bulky V-mount plates and just started using a high-output power bank. It stays cool and basically runs the camera all day.

• Cage: 8Sinn Panasonic S5II Cage has a really low profile and great clearance for the top dial.
• SSD: Crucial X9 Pro 2TB Portable SSD is way smaller than most and fits better in a tight rig.
• Power: Anker 737 Power Bank 24000mAh 140W provides plenty of PD power via USB-C.
• Handle: Nitze LilStinger Top Handle PA28-A is surprisingly solid. The fan cooling works great with this cage layout. Just make sure you get a decent cable clamp so the USB-C doesnt wiggle out... that port can be kinda sensitive when you're out in the drizzle.

Re: "I've been using the S5II for a few..."

• Honestly i had a bit of a rough start with mine too. I moved over from the GH5 and really underestimated how much heavier this whole setup gets once you try to fix the battery issues. Tbh i spent way too much on gear that just didnt work for my wedding workflow at first.
• The first cage i got was a total nightmare for the top dials. It was some generic one and even though it said it fit, it sat so flush that i couldnt actually turn the front dial without scraping my knuckle every time. If you have big hands like i do, stay away from the ultra-slim designs. I switched to the Tilta Full Camera Cage for Panasonic S5 II/S5 IIX because it feels way more substantial and actually leaves room to breathe.
• For power, i tried a basic usb-c power bank setup at first but it was so clunky and the cable kept getting caught on that hdmi flap you mentioned. It was super annoying during a ceremony. I eventually gave up and went with a FXLION NANO ONE V-Mount Battery on a small plate. It adds weight but at least i dont have to worry about the camera dying during the vows.
• I had issues with the ssd mount too... the clamp style ones always felt like they were gonna snap off. I ended up getting a Kondor Blue SSD Handle and it basically solved the dangling cable problem because the drive is tucked inside the grip itself.
• About that cooling fan... it hasn't messed with my accessories much, but i did notice it can suck in a bit of mist if you're out in the PNW drizzle too long. Just something to keep an eye on when youre doing those elopements. Ngl the learning curve for rigging this thing was steeper than i expected. Dont hesitate to ask if you want to know more about the weight balance!

I've been using the S5II for a few months now and honestly, I'm super satisfied with how the rig turned out. Heres what works for me:

• SmallRig S5II Cage 4022: I compared this to the Tilta version and the SmallRig is way better for big hands. It doesnt block the top dials at all and leaves the grip feeling natural.
• SmallRig VB50 Mini V-Mount Battery: This is a lifesaver for long wedding ceremonies. Pair it with a SmallRig V-Mount Battery Plate with Crab-Shaped Clamp 3204 and you can mount it basically anywhere. Use a short USB-C cable for power and you're good for hours.
• Samsung T7 Shield 2TB Portable SSD: Use this with the SmallRig Universal Holder for External SSD BSH2343. Since youre in the PNW, the Shield version is great because it handles moisture much better than the standard T7.
• SmallRig NATO Top Handle 2439: Its solid metal and wont flex like cheap plastic. Very secure. The cooling fan doesnt get blocked by the cage at all, so dont worry about that... just keep an eye on the HDMI cable since that flap is kinda annoying when youre trying to plug things in quickly.