Of the 6 issues you listed, only issues 3 to 6 are of major concern to me.
Issue 5 can be looked into since she has a Local legislative record. THAT record is a huge tell.
Issue 6 is very similar to Trump’s and Reagan’s case, both were registered Democrats before becoming Republican.
I wouldn’t disqualify a candidate from consideration just because he or she was once registered as a Democrat — based on the examples you cited. But this is a giant red flag when the candidate in question is a career politician with no record of accomplishing anything outside politics.