OK, cool. I asked about the size of the audience because it could affect your nerves depending on how well you handle public speaking. Tension is the enemy of recall, no matter how well prepared you are.
Relax and don't second-guess yourself. If you start to feel apprehensive, make sure you rehearse your speech in front of actual human beings and don't leave it until the day.
In my experience, the number one pitfall of memorizing a script is the tendency to paraphrase: this a natural attempt by your mind to find a short cut to committing information to memory by changing the words on the page into language and terms that you use. Not good if you are expected to recite a script verbatim.
Typing /writing it out is the most powerful tool you can use against paraphrasing because it helps you to internalize somebody else's words and ideas. I think you have all the suggestions you need, but I know a few other effective mnemonic techniques that haven't been mentioned, if you need them. Good luck!