I'm fine with that.
(It WAS a trick question. Why didn't you admit that in the first place? You would have saved us both a lot of time).
One can't be a heretic against that which you don't profess, so no you aren't a heretic. However you seem to reject the collective authority of scientists who are authorities by virtue of their demonstrated expertise.
The inerrancy of scripture isn't at issue just as objective truth isn't at issue. The issue is by what method is truth revealed and who decides that it has been revealed. I say that the collective judgment of appropriate magisteriums is the better method to decide what is true or probably true.