I borrowed one from a friend (who did the same to his C8).
You have to be really careful with the spring compressor. As you said, you could easily hurt yourself.
I did it myself. It took about a day to complete as I was doing it on the ground. The best advice I can give is to always take your time, watch and rewatch videos.
I had a mechanic verify my work after and I had to get an alignment (so maybe 200$).
And about 550$ for the Eibach springs.
I have the same car as you and I lowered mine with Eibach springs only. I got it down almost 1 inch all around. I would not go any lower than that as you will have more issues with speed bumps and ramps.