First of all, welcome to the forum!
I am a bit late to the party (as usual), but unfortunately work, medical issues, and rehab has been taking up most of my time for the past year or so.
I am happy to see young people working with electro-mechanical stuff like I was at that age (really from age 6 to present!) I was into go-karts, bicycles, and audio equipment back then, as well as fans and other small appliances. You are at an ideal age to learn by doing and we will help you as best we can.
You CAN do this!
Everything looks intimidating when you lack the experience, but as you learn, it becomes almost 'common sense' - if you have the knack, and it sounds like you do... I was intimidated by replacing Kirby bearings until 2017 when I finally just did it. And restored the whole machine since it was all apart. After then I was restoring one vac after another, rapid fire - no major problems. It was fun, too!
I had made a thread with common Kirby specific tips and tricks that might help you out, as well:
https://www.vacuumland.org/cgi-bin/TD/TD-VIEWTHREAD.cgi?34091_7
It looks like you may be set on parts - kudos to all here whom have chipped in to help provide them!
Lots of used parts are available for these models, possibly because I had saturated the members here with 1CR parts units a couple years back, lol... I had brought home a pickup load of them back in 2019 when a friend closed his Kirby repair shop of 40+ years; I could not keep them all due to space constraints.
If you cannot get what you need here, I may have what you are looking for. I know I have the switch mechanism. I have the socket, too, but it can be a bit tedious to wire in depending on how your wiring was modified.
Unfortunately, I will be unreliable as I am scheduled for shoulder surgery next week. I will not be able to dig for parts since most are buried in boxes in inaccessable areas...
I will however be available for online help if you need it. Get my contact email from my profile in the event I am absent here too long.
Enjoy your 1CR - it is an odd-duck for sure. This was the transitioning to wide nozzle and larger motor right before UL double insulated rule came into play and had them redesigning it into the upcoming Omega).
Most of the motor unit parts are unique to this unit, including the motor and large castings. However the bare switches and socket are shared with the D50 and D80. The power switch brackets are unique.
I have a 1CR to restore this fall or spring, depending on my recovery. I will certainly make a thread for it, since it is an unusual machine. I also have a D80 to restore.
Enjoy the adventure of your restoration, and keep us posted!
-Rob Y