It would be a big job, plenty of work for everybody. I see no reason that adequate food, shelter, clothing, and health care would need to be sacrificed if we make this change. If we wait to do it until we are forced to make the change from the "Oil Age" then the sacrifices will likely be bitter.
Great, I have no issues with finding new technologies that would reduce our dependence on oil (as long as the average familiy's budget isn't busted just to be able to afford a car to drive to work).
But you still haven't answered the question about how you would handle the Iraq problem. I'll presume you don't have an answer. :)