So perhaps "rabid Trump supporter" is the wrong term. A better description of your sentiment might be that you are "rabidly opposed" to anyone who calls him or herself a Republican?
Believe me, I'm not trying to talk you or anyone else out of voting for Trump, but this entire rationale seems a bit illogical to me: "I am a conservative who has given up on the Republicans, so to make a point, I am going to vote for a guy who claimed to be a liberal a year ago, but now says he is a conservative."
I do think Trump is telling the truth when he says that he wants to address traditionally conservative concerns like immigration, and I have watched him for long enough to respect the ability he has to cut through bullshit and get a job done. And, as I said, I think all politicians lie, so I'm less concerned about Trump's honesty. But it still seems to me that your primary interest in this election is not beating Hillary Clinton but in teaching the GOP Establishment a lesson. Do I have that right?
I say that because it sounds to me like you are discounting the DNC and the Clinton's ability to win elections they shouldn't win.
Rabidly opposed to status quo leadership, maybe?
I think it was in the 2008 debates when Gingrich spoke on how many politicians are not interested in fixing anything, they just want to "manage the decay." I thought he was absolutely right, and with the exception of Trump, Carson, and probably Cruz, that's exactly what this current crop is looking to do.
I find that notion unacceptable.