Your part 3 and part 1 are the same.

This is the ??? part you left out:

1. Start RCV campaign
2. Recruit people
3. Collect signatures, pressure local governments, get initiative on the ballot
4. Campaign, campaign, campaign
5. Vote
6. Hope that the public doesn't let the leopards eat their face because the ruling class is very wealthy and will campaign against you HARD
7. If you lose, try again, and keep trying

You don't just stop voting because FPTP is rigged and wildly corrupt. You fight with every weapon at your disposal, even the ones rigged against you.

This is how Maine, Alaska, and Hawaii did it. This is how everyone else needs to do it.