Have you noticed how many lets plays there are? The worst of it is that 99.9% fail. They dont even get to the recording phase before it dies and they give up. I suggest pepole dont do lets plays unless they have experence making videos. They should also have good skills and humor so the lets play wont get boring. Plenty of ideas to make it stand out form the rest. Unless they cant do that I sugesst you dont attempt to do a lets play at all. Its just a waste of time.