Your letter is, first of all, way too long. College administrators probably get dozens such letters every semester, and you need to be persuasively succinct.
But before I help you with it, I need to know what happened: you were dismissed from Stout, appealed, your appeal was denied, and then you went to CVTC where you did not do well. Is that correct? What’s Stout’s policy on re-admission – i.e., what kind of GPA do they require for readmission, and what was your GPA at CVTC?
If your GPA at CVTC wasn’t high enough to re-enter Stout, your odds aren’t very good. It doesn’t matter that you went to a prestigious high school or that you got a DUI ticket or that you now have a good job.
What matters are your grades. If they’re too low for Stout, the school has no choice but to deny you readmission once again. At some point, you need to prove to Stout that you can succeed in college. And if I understand you correctly, to date you have not done so.