Anyone have experience using getcars.jp as a Tokyo resident?

Specifically:
Getcars.jp proxy auction service (already registered and made deposit)
Tokyo
For a light duty truck like Toyota Dyna, Nissan Atlas, Isuzu Elf, etc (will acquire medium license soon so I can stop worrying about unspecified GVW on auction sheets, + for other personal reasons)
As most of these truck listings have expired shaken and not always the best shape, any particular shop recommendations in or around Tokyo that will take auctioned big trucks and fix it up to shaken status? (getting very specific here 🙏). Assuming getcars.jp won't handle that?

I currently have a car, with one registered parking space that is vehicle specific, and need valid shaken to register new car. My space is basically specc'd for max 4ナンバー size. The truck will be replacing this car.
I have a friend who lives out in Nagano that I could possibly ask to park the truck for a bit, if necessary for some reason.

I guess my biggest concern is winning a bid and getting it up to speed as a 23ku Tokyo resident. I don't have the tools, space, nor the opportunity to skill-up to DIY anything more than an oil change. I'm thinking once I get my medium license this month I'll start contacting some shops and see if they can receive an auction truck to evaluate and shaken?

Another minor concern is what point and how to get rid of my current car. I'm leaning towards Rakuten auction and have them haul it away. Or maybe private sale.

I found a post about registering an auctioned vehicle, so I think that covers enough. Unless there's something specific to Tokyo, getcars.jp, or otherwise the process I'm projecting here.

Get vehicle shaken'd up before registering process? Or do the whole registering process before shaken? Am I missing something else?

I think it's a longshot. A lot of the Japanese info for these trucks I find online are from those outside of Tokyo who have their own garages and even shops with lifts and welders etc.