“Can or would the officers reject my application upon receiving it before I even have a chance to show what I can do post-high school having learned from my mistakes?”
No. Applications aren’t even looked at until the transfer academic update.
“I put on the application that I took the classes during high school and that they don’t represent my current academic ability but is that enough?”
Sort of. It depends on a number of factors, namely: what do you plan to major in, how many units are you taking, and where do you want to apply?