I plan to rig the R7 with a speedbooster which turns it into a FF FOV camera, but the downside is FF lenses don't have the reach that crop lenses typically do. The kit lens is a 18-150mm lens, my most useful lens is the FF Canon EF 24-105mm F4.0 However, if I use the crop mode on the R7 and a speedbooster I can extend that to around 24-160mm at F2.8.
The extra reach will be useful when shooting runway shows and the models are posing at the start of the runway, or the guest speaker never walks down the runway, or weddings where you want a closeup of the ring exchange, etc. etc. pretty much anytime your current lens just doesn't get you close enough.
On my editing workstation the files are marginally editable without proxies. I use Davinci Resolve, and my GPU is an RTX2080 Ti with a Core i9 14 core CPU. I used compressed IPB in the R7 and CLOG3 which is H.265 422 10 bit footage. NVIDIA can't accelerate that footage so the CPU had to do all of the work.
For the footage that was 30FPS I could edit it without proxies as long as I was ok with occasional dropped frames and a little stuttering. For the 60FPS footage I needed proxies or optimized media. The R5's footage is the same way, proxies or optimized media is the only way I can playback the footage in real time. The C70 by comparison uses XFAV-C and both 30FPS and 60FPS footage plays smoothly. RAW 4K out of the C70 and RAW 8K out of the R5 of course plays perfectly fine.
I live in FL USA. In the summer here it averages 95F + with up to 100% humidity so everything I buy I keep overheating in mind. The R5 overheated even with the latest FW at the time in less than 30min at an outdoor runway show when shooting mostly photos with a few 4K video clips mixed in. The 4K wasn't even the HQ mode so I don't care what anyone on YT says....the R5 WILL overheat still to this day in any 4K mode during real world use in hotter climates. Once the warning came on I stopped shooting all video clips because for all I know it might have stopped taking pictures next which would have been far worse.
At the same fashion show the C70 ran for hours with no problems. I am hoping the R7's ambient temp handling performance is at least as good as the S5; the S5 never overheated once.