Nothing is impossible for the person who doesn't have to do it himself. Anything that begins well ends badly. Anything that begins badly ends worse. If it looks tough, it's damn near impossible. Whatever you did, that's what you planned.
Simple advice is the best advice.
There ain't no such thing as a free lunch. The result of improved and enlarged communications is a vastly increased area of misunderstanding. The probability of a component blowing up is inversely proportional to its availability. Negative slack tends to increase. In case of doubt, make it sound convincing.