This sounds like a great effort. I wanted to point out 2 things:
- I think that GCE IP addresses are blacklisted (due to an earlier sybil
attack, https://lists.torproject.org/pipermail/tor-relays/2015-August/007656.html).
I don't think it is blacklisted currently (but maybe someone at the dir auth level can confirm that), see also this tor-dev thread:
https://lists.torproject.org/pipermail/tor-dev/2015-August/009389.html
- How do you see your work relating to and differing from the discontinued
Tor Cloud (https://cloud.torproject.org/) project? I don't mean to discourage you, but I'm curious what the differences are.
cloud.torproject.org is dead.