Will a trial lower chance for supervision and lower fine for Class A Misdemeanor?

I was pulled over and cited on October 2012, 2 A.M., at Chicago 90 Skyway east bound going 85 mph on a 45 mph speed limit. I prefer going to trial without a lawyer because there is reason to suspect the equipment that was used has not been tested for accuracy. Secondly, the Illinois police officer did not follow the code of conduct in pulling me over because he allowed me to walk to his vehicle and threw me in the back of his car for a simple speeding citation. There is even more reason to suspect the officer did not follow procedures before using his Lidar equipment. I will have a witness, who was also in my vehicle at the time of citation, to prove that the officer did not follow the code of conduct. I would like explore my options for this Class A Misdemeanor because I currently have an expunge case in process. Will a trial lower my chances of obtaining supervision and a lowered fine? I would like to explore all options to avoid a conviction. Thank you, Patrick