You have, to your credit and to effectiveness, called Barack Obama a good man who you are sure means well.
That is an excellent strategy. I "get" that it is also authentic, very real.
And it is the truth that he is a good man of sound character who is committed to good values.
He is simply not suited for this job and not aligned with what needs to be done now.
In fact, the coupling of his lack of ability in the job with opposition to much of what works for prosperity is very counterproductive - and in fact very damaging, so we need to work harder to fill in the additional hole he has dug.
Now the question is how to make this clear in just a few seconds. Hopefully, your coaches and writers can bring this about.
I would purport that saying anything that can be construed to be negative about Obama will get a mental push back from those who "like him", which are a majority of the population.
I believe you can make your points and draw your contrasts in a positive manner and avoid the typical politician's stridency and negativity.
In your introduction to your plan, you start off with something that needs to be amplified and emphasized, and you lose it all in the seeming urgency of criticizing Obama. (See A Clear Why: The Dream.)
The criticism is valid and well-done, but I think acknowledgement of a positive would not hurt, but would help, the message. Insert something like "while I believe it was well-meaning..."
And, after the third paragraph, repeat "My heart and the hearts of all Americans can't help but be broken when we see so much hardship and struggle."
I would repeat with every session that has any criticism in it: "This is not about you, Mr. President, as I believe you are a good likable man with fine character and dreams. It is instead about the ability and the experience to create results in this type of job." "I share your dreams for all Americans to be better off, safer, and happier. I just believe that we can only achieve that with effective action based on experience, capability, and effective planning."
"I would love to associate with you in this government and in these endeavors in the right position to use your talents and thinking. I hope at some time in the future that you will consider that. In any event, I would like to see you contributing to our country for many years in the future."
"I hold nothing against you as a man and a good person. I simply see that you are just in the wrong job and that it doesn't fit with your talents."
I also believe that we should follow what Barack Obama said in his great speech in Tucson (Gabby and others who were shot/killed).
Things are happening in America today that break my heart.
They represent suffering and hardship on a grand scale.
The anger is justified. Things don’t have to be this way. I believe America can do better. That’s why I am running for president. (Seems weak, even 'the right thing to say', but what I see when I look at you is an authentic caring that might better be made much, much more clear: "I will not tolerate this suffering and hardship. It is my dream and my commitment to turn this around quickly and effectively - with your help. I believe that, together, we can again create the prosperity we all so ardently wish for. It is my dream to again see America prospering, for all of its people.")