I recommend you not to use any laptop cooler. Place your laptop in a way where one side of the lower part of your laptop is not attached to any surface. Let it have some fresh air. Cooler would do damage to your battery.
You can check in this site with your earphone audiocheck dot net (or com). If you notice a problem then use the same earphone in another device and find out if the problem is with your laptop or if the problem is with your earphone.
You don't have to go through jailbreaking thing. You need to back up your iPad on a computer then install that back up on your mobile. Then all of your progress in every game will be there.
There was a time when we were amazed with the 5 mega pixel camera quality on a mobile phone. Now we can't even think about it. I think you should at least try the better one. Let's welcome the new technology.