Sometimes a Judge will dismiss the charge or reduce it to "without knowledge" when you present a valid DL. If the Judge won't offer such a disposition, then your attorney may be able to convince the State to amend the charge to NVDL if you are facing a habitual traffic offender revocation. You could also use the "Clerk option" to resolve this charge. Confused? Contact a local criminal or traffic attorney.
It is unlawful to exceed the posted speed limit, but the Court may be lenient given the circumstances you have described. Find a traffic attorney in your area, many offer free consultations and will represent you for a nominal fee.
You need to get a charge of driving on suspended license off of your record? If that is what you are asking, you can't get anything sealed off of your driving record but you may be eligible to seal the charge off of your criminal record, however, I wouldn't personally recommend using your once in a lifetime seal/expunge on such a charge.
Personally, I wouldn't advance such facts in an effort to reduce my client's fine. You could risk getting the DMV's medical board involved and they may suspend your license until you provide them with medical clearance.
There is limited discovery, Fla. R. Traf. Ct. 6.445 requires the officer to put the "type" of device on the body of the citation, but this does not necessarily require the officer to put make and model of the device. The decision on whether to be heard by a hearing officer or Judge should be based on the demeanor of the official that would be hearing your case - an Orlando traffic lawyer would have the knowledge and experience required to determine whether to set your case with a Judge or...