lissa

Still from a short I am working on. This isn't going to make it into the cut, but it was too cool not to share. 

Shoot everything at 1080p. Don't shoot yourself in the foot with 4K. Although I do like shooting ceremonies at 4K for the post crop. 
Canon skin tones are the best. Even a used 70d would be better than Sony IMO. The C100 mk1 and 2 are the best cameras for weddings IMO. I've shot a few recently with C100 mk1 and my 1DC and it's super nice. Here's a teaser I did with 1DC/ C100 combo: 
 
 
You MUST MUST MUST remember that wedding films are CONSUMER PRODUCTS. DONT EVER FORGET THIS. THIS IS 6 years of experience and over 300 weddings shot of experience talking to you. These people aren't professional filmmakers. They aren't producers. They aren't film snobs. All they want is pretty shots of them on their big day. If you shot it all with a t2i and a 50mm 1.8 they would love it because it looks "cinematic". Don't get caught up with the gear when it comes to shooting weddings. That's the biggest waste of time and money. The couples simply don't give a shit. 
I hope you enjoy it. Weddings are a fantastic way to get lots of experience and become a ninja shooter 

Blackmagic Design today announced URSA Mini Pro 4.6K G2, a second generation URSA Mini Pro camera featuring fully redesigned electronics and a new Super 35mm 4.6K image sensor with 15 stops of dynamic range that combine to support high frame rate shooting at up to 300 frames per second. In addition, URSA Mini Pro 4.6K G2 supports Blackmagic RAW and features a new USB-C expansion port for direct recording to external disks.
 
https://www.blackmagicdesign.com/media/release/20190305-01
 

 
Hopefully the price of Ursa Mini Pros G1 will go down now ? 

Well only addition is 300 fps. I never even used 120fps on the ump. So for me the g2 is not worth the upgrade.
What, I would even prefer my pocket 4k over the fs5 ii.

The video from Matthew Staffords wedding looks like it was shot on a Red.
I was at an event where they did this with an iPhone taking with a simple setup of a small fluorescent key/fill/hair light. They shot stills, boomerangs and recorded goofy slow mo stuff, sending it to an iPad through an app (don't know what the app was called, but guests were able to email the video to themselves), and broadcast with an Apple tv mirroring the iPad. In good light the iPhone 120fps looks good, and its fine for social. If you didn't have the app, someone could just shoot the video on a phone and airdrop it to an iPad or MacBook for a quick edit, and then it can be emailed or airdropped to other iPhones.
I've attached a shot of the iPad that was used for review and emailing images/videos. Wish I could help with specifics, but a combo of iphone/ipad would be my solution. A ILC presents a lot of headaches in terms of file transfer, file size, edit/render speed and so on. I have the iPhone XS and XS Max (one is supplied by a company I work for, I'm not a two phone dink by choice) and the iPad Pro. I think it would be easy to pull off what you're looking for with my little setup with two people - a shooter and a editor to make quick clips and send them to guests. Five seconds of slow-mo video of someone dancing or throwing crap in the air could easily be edited in iMovie and emailed in less than a minute.
Everything you need including lights and stands can probably be carried in one large bag/case. The days of the DSLR based photo booth are numbered, there's no reason to lug all that around for small instant prints or social when phones and a few lights will get you virtually identical quality. And you can probably charge a lot for the service. Hmmmm...
Chris

d600 is still my favorite.....!!