That's an interesting question. In general, I think of optimists as people who believe that things can change for the better and problems can be overcome; pessimists might be described as tending to believe that it doesn't matter what we do-we cannot influence the outcome of events.
From that broad perspective, one might then reach the conclusion that AGW proponents are optimists since by and large, they believe that human beings are responsible for or may influence the natural climate changes that are occurring, and that by changing our behavior we can moderate or overcome the worst effects of global warming.
Skeptics, on the other hand, often believe that it doesn't matter what we do, we cannot influence a process that they perceive as natural; therefore one might conclude that skeptics are the pessimists.
Conversely, it might be argued that AGW proponents are predicting disaster if we don't act while skeptics are predicting that everything will turn out just fine and we can go on as we have been. That argument would classify AGW proponents as the pessimists and the skeptics as the optimists.
As far as your personal views go, I would like to get a little more detail on the programs and plans the skeptics have for solving the problems stated by others, and it does seem contradictory then to go on and say that the pessimists-in your view-predict doom and gloom if their recommendations are not met. If they have recommendations, it would seem to follow that there is a plan on that side of the debate too.
My own point of view is that more progressive people tend to be more optimistic and people who are unwilling to change and adapt are more pessimistic. I mean, we talk about youthful idealism and 'saving the world' in rather sarcastic tones, but I would say people believing that the world can be saved regardless of whether they have a foolproof plan to do so are clearly optimistic. Practicality is not a requirement of optimism. Overall, I'd have to give the optimist club plaque to the AGW proponents.
EDIT: You said: "The programs recommended by the proponents are basically stop using oil or coal for everything now and when something is found that we are happy with you will be told how much it is going to cost you. In the mean time stop using any electricity that does not come from wind or solar. "
I understand that you are paraphrasing but this doesn't sound like an accurate interpretation of anyone's recommendations. I've never heard anyone with any kind of credibility propose that we simply immediately stop using oil or coal for anything. Please do go on and let us know exactly who is proposing such things.